“You must never feel badly about making mistakes…as long as you take the trouble to learn from them. For you often learn more by being wrong for the right reasons, than you do by being right for the wrong reasons.” –Norton Juster
In the aftermath of Hai-Furi: The Movie, I felt the inclination to revisit 2016’s Hai-Furi, which first began airing in April that year. Back then, it took many viewers completely by surprise: all indicators had suggested that this was going to be an easy-going series around discoveries made while training to become Blue Mermaids, a venerable organisation whose duty is to patrol the oceans and provide assistance and defense where appropriate. On her first day of class, Captain Akeno Misaki leads her destroyer, the Harekaze, into training, only to come under fire from her own instructor. In the aftermath, the Harekaze becomes wanted for alleged mutiny. In the ensuing chaos, Misaki and her crew get to know one another better as they work to clear their names, eventually unearthing a mystery behind their pinches. As the series continued running, viewers created their own speculations and theories regarding what was occurring. While generally interesting to read, some of these theories became increasingly ingrained as fact even as Akeno’s adventures began proving them to be untrue. Hai-Furi is the sort of anime that really requires an open mind to appreciate, and there are some claims that absolutely must be ascertained before one can start this series. In this post, I will be covering four myths surrounding Hai-Furi, which came about during and shortly after the first few episodes aired. When accepted as true, these myths significantly degrade one’s experience of the series, where the extraordinary events ultimately form the backdrop for a simple and straightforward theme: that bad luck is often-times only an excuse, and that the outcome of a given action is more likely to be successful when everyone is working as a team where the individuals trust one another to perform their role in a satisfactory manner. As Mashiro Munetani learns, luck has very little to do with things, and even what appears to be a setback, or the bad luck she is quick to cite, can become an asset with enough creativity and forward thinking.
The inert torpedo from the Harekaze sank the Sarushima
In the first episode, after the Harekaze arrives late at the rendezvous point with the Sarushima to begin their first class, Akeno and the others find themselves under fire from their instructor. The girls initially assume that this is a reprimand for being late and attempt to signal the Sarushima, but when nothing is effective, Akeno orders a training torpedo to be launched: realising that they’ll be pummeled to death if they continue to evade, Akeno chooses a course of action that sets in motion the events for the remainder of Hai-Furi. The crew thus put their training to use, firing a single inert torpedo that impacts the Sarushima and buys the girls enough time to escape. In the aftermath, the Sarushima appears to have suffered from noticeable hull damage, listing to the port and leaking oil. However, claims from Myssa Rei suggest that the Harekaze outright sank the Sarushima:
Wrong, in fact this is one of the things that the people at /a/ immediately contest — an armed 93cm Long Lance would have blown the Sarushima in half, as LSCs literally have no armor (or modern missile destroyers for that matter). They simply weren’t built to defend against an attack like that, because torpedoes no longer figure in modern (Cold War and onward) ship to ship combat. The Kagerou class could only launch one type of torpedo, as the Type 92 launcher was only made for the Long Lance in mind.
In every source I’ve looked and read, the Type 92 launcher, which is rendered EXACTLY how we saw, was only designed for the Type 93 1933 61 cm Torpedo, aka the Long Lance. IJN destroyers carried nothing else, and the torpedos that came later — the Type 95 and Type 97 — were made to be launched from subs, and would be too small to be launched safely from the Type 92. We’re talking a big difference here, as the type 95 and 97 were 53 cms. They wouldn’t fit snugly into a Type 92.
Now the fact that an UNARMED Long Lance would have sunk the Sarushima though? That’s where conspiracy theory and wild mass guessing steps in. According to the usual military enthusiasts, a PRIMED 93 cm Long Lance would have blown the Independence-class to smithereens, yet an UNPRIMED dud wouldn’t have made it list so much as in this episode… which could point that it was all a set-up.

- Myssa Rei’s reasoning was that, since these mounts were designed for the Type 93, it stood to reason that the Type 93 was the only torpedo the Harekaze could have carried. However, discussions immediately deviated from the topic – while Hai-Furi had established Akeno specifically ordered a dummy torpedo loaded and fired, things immediately turned over to the question of how much damage a live Type 93 would do to the Sarushima, which is an irrelevant question with regard to what had been happening at the time.

- The reality is that the Harekaze was equipped with Type 93 torpedoes with an inert warhead for training: Myssa Rei’s implications, in omitting mention of Akeno’s order, here would be analogous to suggesting that a rack for launching the AGM-114 Hellfire would only be compatible with live variants, but is otherwise unable to accept missiles outfitted with the M36 training device in place of its usual warhead. This is evidently not true: launchers are agnostic to the type of warhead the torpedo or missile is loaded with, as long as the missile casing is the right size and type, it will fit into the launch mechanism.

- Thus, the torpedo mounts on the Harekaze would’ve accommodated both training and live torpedoes without any issue. There was never any doubt that the Harekaze had a stock of training torpedoes to use for exercises. The bigger question that this myth created was, how could a training torpedo have sunk the Sarushima? The answer itself is actually simple enough, and looking back, I now wish that I did take the time to step into the discussions and make my presence more visible: I imagine that by debunking Myssa Rei’s claims, discussions would not have gone in a cyclic, unproductive manner as it did.

- The reason I did not actively correct or counter-argue with Myssa Rei had been because at the time, I had just been gearing up for my graduate thesis defense, and had simultaneously begun to do episodic reviews of Hai-Furi. Together, this was a very busy time: I was juggling the final draft of my thesis paper, the defense presentation itself and keeping abreast of all of the different speculation and theories that had surrounded Hai-Furi to ensure that my own posts adequately answered questions that might’ve been raised. Arguing with Myssa Rei did not seem the best use of my time, so I did not act, and in retrospect, the decision was both wise and foolish: by focusing on my work, I was able to pass my thesis defense with flying colours, but on the flipside, I allowed myths about Hai-Furi to endure.

- Once the training torpedo hits the Sarushima, it leaves a sizeable dent in the hull. The ship begins listing to port, and evidently, the fuel tanks must’ve also sustained damage. However, even though the Harekaze’s crew imagine that they were in trouble for sinking an instructor’s vessel, no such thing has occurred. It typifies forum and image-board discussions to immediately jump to conclusions in a hive-mind like manner, and it was this mode of thinking where many of the misconceptions and errors about Hai-Furi came from.
Firstly, the Type 93 “Long Lance” was a 610 mm (24 inch) torpedo, not a 930 mm torpedo (probably a typo on Myssa Rei’s part). Being one of the most sophisticated Japanese torpedoes of WWII, the Type 93 utilised compressed oxygen as the oxidiser, greatly increasing the torpedo’s range and speed. Together with the 490 kilogram warhead, the Type 93 allowed small destroyers like the Kagerō-class to equip weapons capable of dealing damage to battleships at a range of 40 kilometres at a speed of 70 km/h. To put things in perspective, the best Allied torpedoes were the 530 mm Mark 15, which carried a 375 kilogram warhead out to a maximum range of 14 kilometres at 49.1 km/h (although the Mark 15 could reach a maximum speed of 83 km/h at a cost to its range). There were risks associated with these torpedoes, but in practise, the Imperial Japanese Navy recorded successes with the Type 93: for instance, four Type 93 torpedoes were used in sinking the USS Hornet at the Battle of the Santa Cruz Islands in 1942. As it stands, modern warships are much more lightly armoured than their predecessors, instead, depending on electronic countermeasures to evade enemies over heavy armour. The Sarushima is modelled after the Independence-class littoral defense ships, which use an aluminium alloy hull and only possesses light armour, counting on its speed and ECM to evade enemy fire. Intended for shore patrol, intercepting smaller ships and anti-submarine warfare, the Independence-class represents a completely different use-case, and it is the case that a single live Type 93 could have rendered the Sarushima inoperable, overwhelming multiple bulkheads and creating a catastrophic situation where water would’ve filled enough compartments to eventually sink the ship, had the torpedo hit the wrong spot.
However, in Hai-Furi, the Sarushima only suffers from moderate hull damage; the very dialogue has made it clear that a training torpedo with an inert warhead was used. As for the amount of damage the training torpedo did to the Sarushima, we recall that the Type 93 torpedo had a mass of 2.7 metric tonnes: capable of reaching speeds of up to 96 km/h, at the close quarters that the Harekaze fired it in, even if no warhead was equipped, a glance at the relationship between velocity and mass finds that the amount of kinetic energy imparted by a direct hit is non-trivial. The light armour on an Independence-class would at least buckle a little from the impact, especially if the torpedo had struck whilst moving at high speeds, and given Akeno’s unusual luck, it is not out of the realm of possibility that she could’ve hit somewhere critical, breaching the hull and allowing water to seep in, creating the list seen in the anime. However, modern naval vessels possess watertight compartments so that, if one compartment is breached, it is immediately sealed off, preventing water from entering other areas. When the Sarushima was hit, systems on board would’ve prevented the hull breach from causing the ship to sink. Owing to their engineering, naval ships are very difficult to sink outright; for example, during a 2016 RIMPAC SINKEX exercise, a Perry-class frigate was used in a live fire exercise. With no crew on board, and all of the watertight compartments sealed, other vessels hammered this abandoned Perry-class. Without a damage control crew, the vessel still took a day to sink. Moreover, the Independence-class has a Trimaran hull, so the port impact would not have affected the starboard hull. Hence, it is clear that a live Type 93 is not guaranteed to have immediately sunk the Sarushima (even if it does mission-kill the ship), and moreover, an inert training warhead certainly did not sink the Sarushima. It is important to reiterate that at this point, the Sarushima was damaged, but not sunk: the vessel was later towed to port for repairs, while instructor Furushou was transferred to a different vessel.
Verdict: Busted
The Hunt For Red October‘s plot influenced Hai-Furi‘s plot in its entirety, and the entire staff watched the film ahead of production
Shortly before the third episode aired, the Hai-Furi production team released a special interview with script supervisor Reiko Yoshida on their official website. In this interview, Yoshida remarks that Hai-Furi had always been intended to be about overcoming difficulties, and that crossing the ocean became a metaphor for the series’ themes. As such, the series placed a particular emphasis about camaraderie on the high seas, and to this end, showcased different members of the crew and their unique points to really emphasise how life on a ship was conducted. As a part of the interview, Yoshida was asked about whether or not she was inspired by any other works while writing for Hai-Furi.
According to this the production crew watched The Hunt for Red October as reference material. Let that sink in.
問: なかなか参考資料が少ない作品だと思いますが、参考にされたものはありますか?
答: 吉田 鈴木さんから参考資料を貸していただいたり、映画はいくつか観ました。『レッドオクトーバーを追え』などですね。船内の生活の参考にしています。
Whether its[sic] for script reference, of just crew conditions, is up to debate.
Q: This is an original work with few references to existing works, but are there any references to other works?
A: I mostly referred to materials from Suzuki, but I also saw some films. For instance, I used The Hunt for Red October as a reference for what life on board (a ship) was like.

- It was indeed Hai-Furi that led me to pick up and read Tom Clancy’s The Hunt for Red October – at the time, I’d already been a fan of Tom Clancy, having read a handful of his Jack Ryan Jr. books, which followed the clandestine off-the-books group, The Campus, as they work to collect intelligence and action it in order to stop plots that threaten the United States. The Hunt for Red October had been described as “the perfect yarn” by former President Ronald Reagan, and upon reading it, I was very impressed with how the book managed to weave so much technical detail into a compelling story. I subsequently watched the film, as well, finding it to be every bit as engaging as the novel.

- However, one thing also became apparent to me: all of the memes online that suggested Hai-Furi was The Hunt for Red October with hawt anime girls were wrong. A bit of tracing found that all of this ended up from Myssa Rei: originally, the interview at Hai-Furi‘s official site was posted to Reddit and initially did not receive too much traction. When Myssa Rei found it and posted the above quoted passage to both AnimeSuki and Tango-Victor-Tango, the idea immediately took off like a wildfire. Some fans even create fan art of The Hunt for Red October‘s movie poster featuring Akeno and Mashiro, while at Tango-Victor-Tango, a troper would write that there were enough similarities between the two’s plots: both involve pursuit of a “rogue” naval vessel.

- When I first watched Hai-Furi, I had not read nor watched The Hunt for Red October for myself, and so, I could only remark on it. However, once I did finish, I found next to no similarities beyond this, and so, I dug a little further into the interview. Armed with my own rudimentary ability to read Japanese, I quickly learnt that Myssa Rei had, in fact, left out a great deal of context and (inadvertently, I’m sure) mistranslated the interview passage. The interview had been with one of the script supervisors, Reiko Yoshida, who mentioned that she specifically watched the film to gain insight as to the conditions inside a ship.

- Nowhere in the interview did she suggest that other members of the staff also watched The Hunt for Red October. Yoshida’s mention of The Hunt for Red October was in the passing, and wasn’t an integral part of the interview. In spite of this, the lack of any other information resulted in memes being created, and misinformation being spread. When one reads the interview in full, it becomes clear that The Hunt for Red October was but one part of Hai-Furi, which had been intended to be a story about overcoming difficulties as a team.

- The lesson learned from this myth is not to always trust someone’s translation work in full unless they are a professional: languages have their own subtleties, and Myssa Rei’s partial translation left out enough details such that it completely changed what the interview’s answers had been about. Instead, folks should always strive to reason through things themselves, and where applicable, use any appropriate resources to assist in the process.
Yoshida largely used scriptwriter Takaaki Suzuki’s notes to help with her work, and in the interview, she explicitly stated that she also watched The Hunt for Red October to gain a measure of how other works presented life on board a ship (in this case, the submarine, USS Dallas). In the interview, however, there is absolutely no indicator that the entire production crew had sat down to watch The Hunt for Red October, nor is there any truth in the claim that the overarching narrative in Hai-Furi was inspired directly by The Hunt for Red October. The Hunt for Red October was about CIA analyst Jack Ryan struggling to convince his superiors that Soviet Captain, Marco Ramius, was intending to defect, and the novel’s themes had been about the complexities of politics interfering with one’s ability to do what is right, as well as the idea that not everyone in another nation is subservient to their ideology. These themes were framed around a submarine chase and technical expertise from the submarine crews, as well as Ryan himself: the US Navy had intended to capture Ramius and the Red October, a Typhoon-class submarine equipped with a revolutionary silent propulsion system, something that Ryan was familiar with. Shortly after this interview came out, Myssa Rei quoted the passage above out of context and mistranslated it, resulting in the impression that The Hunt for Red October had served as the primary inspiration for Hai-Furi. This resulted in the preposterous claim that Hai-Furi was, in effect, an anime adaptation of The Hunt for Red October, since both series involved “a rogue ship is being hunted down by the world’s navies”.
When the interview is read in its entirety, however, Hai-Furi was written with a very different objective in mind: even before the anime’s story was fully presented, the full interview shows that Hai-Furi had always been intended to show how people grow and mature when placed into difficult situations. The idea to use a naval setting was simply because on a naval vessel, quarters are very cramped and narrow. Things that people take for granted become valuable or even absent, and so, it created an environment where trouble and adversity awaited around almost every corner. Thus, Akeno and the others needed to adjust to this environment and rise above their problems. Conversely, in The Hunt for Red October, the metaphor of using sonar to hunt for a rogue submarine was chosen to represent navigating political circles: finding the answers is akin to searching for a needle in a field of haystacks, but even then, skill and perseverance carry the day. It becomes clear that Hai-Furi and The Hunt for Red October only share the most superficial of similarities: both works take place on the high seas, but beyond this, strove to accomplish entirely different goals, tell different stories and present different themes. There is no basis to suggest that Hai-Furi was inspired directly by The Hunt for Red October at scale. This particular misconception resulted as a result of a mistranslation, and as a consequence of taking Yoshida’s words out of context; the lesson learnt here is not to take fan-translations of interview materials at face value, especially if they are sourced from individuals who do not have the skill or willingness to provide a correct, complete translation.
Verdict: Busted
Takaaki Suzuki tweeted a full justification for why powered flight doesn’t exist in Hai-Furi
The absence of heavier-than-air flight in Hai-Furi became immediately noticeable by the events of the third episode, when Kouko comments on how she wishes she could fly like a bird, without the need for hydrogen or helium, and Mashiro remarks it’s outright impossible. I myself had immediately noticed the absence of aircraft carriers out of the first episode and found it absurd that they’d be absent, especially considering that smaller carriers have been successfully used as helicopter carriers: while there may be no need for super carriers and power projection, helicopter carriers would be immensely useful for deploying rotorcraft, which have applications as emergency transport vehicles, search and rescue, observation and even carrying loads. Their utility would be immediately apparent in a world like Hai-Furi: helicopters do not require a runway to take off, and given how that the land had been submerged by rising oceans, it stands to reason that these aircraft would only become more valuable as a part of the Blue Mermaid’s tool set. This apparently was not the case: it soon became clear that heavier-than-air flight had never been developed at all in Hai-Furi. This was evidently a plot device: the presence of heavier-than-air flight would’ve allowed for the Blue Mermaids to trivially solve the anime’s story, and the restrictions were present precisely to give World War Two era naval vessels a chance to shine. For the same reason air and infantry support are absent in Girls und Panzer, Hai-Furi dispensed with heavier-than-air flight altogether to accommodate the story. This is understandable, but things became murkier once Myssa Rei claimed to have found a series of tweets from Takaaki Suzuki himself.
I think that people should be MORE worried about another tweet by someone connected with the production itself, rather than getting angry at how airpower was just taken out of the picture by authorial fiat (because the sheer butterfly effect this would cause is already driving some people up the wall). The extra information you seem to be referring to were kind of Q&A Tweets from Military Adviser Takaaki himself:
In addition, I wonder how many people watched script writer Takaaki Suzuki’s commentary on the setting for Hai-Furi. According to the commentary, it’s “a world where powered flight was unsuccessful”, so there are no blimps, aircraft or rockets that use onboard propulsion to fly. As such, aircraft carriers do not exist, either.
Furthermore, because Japan became resource-rich as a result of methane hydrate mining, there was no need for a Pacific War. World War Two became a strictly European conflict, and without aircraft, there was no need to develop effective anti-air weaponry. As such, more advanced anti-air weaponry from the latter half of the war will not appear.

- Early in Hai-Furi, Kouko expresses a wish for heavier than air flight, only for Mashiro to reply with a blunt “no”, that it’s impossible. I did not particularly take exception to this fact, since Hai-Furi would’ve progressed very differently were air power available as an option. The choice to remove air power was done deliberately so naval ships from the World War Two era had a chance to shine in Hai-Furi – as aircraft carriers became more integral to naval power during World War Two, battleships were quickly pushed out of the picture. The Yamato, Japan’s greatest battleship, was defeated not by the USS Missouri, a similar battleship, but by aircraft launched from carriers.

- Instead, I disagreed immediately with Myssa Rei pushing a few Tweets as being sufficient evidence for why air power never developed. Looking back, it was suspect that Myssa Rei chose to screencap the Tweets and upload the images to an image host, as opposed to providing a direct link to the Tweets themselves. While this was likely done out of convenience (e.g. if the Tweets were deleted, or the account were to become deactivated), a record of them would remain. However, this also prevented others from grabbing the text and translating it for themselves, which meant that for ease of discussion, forum-goers simply accepted Myssa Rei’s translations and interpretations to be true.

- I was able to use Twitter’s findfor-since-until query to locate the original Tweets and grab the original text for a bit of machine translation. The results should not be too surprising: the original Tweets had not actually been from script writer Takaaki Suzuki as claimed, and moreover, were again, translated in an incomplete manner. Through Myssa Rei’s translation, it was implied that air power had simply been too hard to figure out, so people gave up on it. The actual text simply supposes it was unsuccessful, and gives no further explanation, meaning it was equally likely that powered flight went the way of the earliest electric cars after the internal combustion engine was developed.

- As it was, I disagreed with Myssa Rei on this particular detail, and was met with a stony silence on the forums. It typified Myssa Rei’s usual modus operandi: since I was deemed unworthy of talking to them at the same level, I never got responses for any of the information or theories I put forward. However, in a curious bit of passive-aggression, Myssa Rei later edited Tango-Victor-Tango to read that I was a part of the “broken base” over the absence of air power. I had not been opposed to the lack of heavier-than-air vehicles, but rather, the assertion that it was simply too hard and therefore unnecessary to develop aircraft and helicopters.

- I’m not sure how Myssa Rei would’ve actually found the Twitter posts in question, but I imagine that it was probably through imageboards. I’ve never particularly liked image boards, since their anonymous nature meant that people were often prone to abuses, with users posting fan theories and outrageous guesses that almost always turned out incorrect. For instance, 4chan’s anime boards speculated that the phenomenon caused by what was later known as the Totalitarian Virus was actually mind control, whereas I contended it was a virus. When I made this suggestion on AnimeSuki, I was told that this was impossible, and mind control made more sense. Once the later episodes revealed the phenomenon had a biological origin, discussion on that topic immediately ceased.
I will open by remarking that the Twitter account in question does not actually belong to Suzuki: Suzuki operates a Twitter account under the handle @yamibun, and specifies his birthday as being June 9. This profile is definitely Suzuki’s, as it openly specifies that he works as a writer and does screenplays. Conversely, the account that Myssa Rei cites, @hunini181202 (formerly @xBbZcxGT3KAVmR9) belongs to a military enthusiast who enjoys uploading military photos to Wikimedia Commons and lives in Ujitawara in the Kyoto Prefecture. Furthermore, @hunini181202’s profile lists the user’s birthday as November 16. The lack of overlap indicates that @hunini181202, who Myssa Rei cited as being Suzuki, is in fact, not Suzuki, who uses the @yamibun account. Thus, the conclusion is simple enough: the individual who made those Tweets about heavier-than-air flight in Hai-Furi is not Takaaki Suzuki, and in fact, is only stating that he has source material from Suzuki. We can thus discard Myssa Rei’s assertions that the lack of air power in Hai-Furi is justified on the basis of “authorial fiat”, having shown that Myssa Rei’s initial premise is false. However, in proper MythBusters style, this isn’t any fun, so those claims from the anonymous user are still worth considering. Thus, let’s suppose for a moment that Takaaki Suzuki did, in fact, argue that the lack of heavier-than-air flight stems from setbacks dating back to the Wright Brothers in 1903.
The primary point here is the assertion that heavier-than-air flight, like fixed-wing aircraft and helicopters, don’t exist simply because the attempts to develop it failed, and as such, humanity simply discarded the concept and walked away without ever considering the idea again in the future. This is, quite frankly, an insult to Wilbur and Orville Wright, as well as every aviator who attempted to carry out powered flight prior to 1903: the Wright Brothers had struggled extensively to design a vehicle capable of powered flight. After testing various designs between 1900 and 1902, they determined that the Wright Flyer design was the most suitable and set about testing it. On their first trial, Wilbur crashed the vehicle, but it was repaired, and Orville took to the skies for a total of twelve seconds on a subsequent attempt. Although short, and their initial efforts resulted in the destruction of the original Flyer, the Wright brothers had demonstrated that powered flight was indeed possible. History would’ve dictated that, had the Wright Brothers failed, early aviators like Karl Jatho, Samuel Pierpont Langley or Alberto Santos-Dumont would have succeeded given enough time. History is dotted with individuals who were met with failures before success: the Dyson vacuum under went more than five thousand iterations before it worked, and James Dyson ended up creating his own manufacturing company to build them when large manufacturing firms declined to, Robert Goddard’s concept of a liquid fuel rocket was originally dubbed “impossible” but would form the basis for all modern rockets, and Thomas Edison famously experimented with a thousand designs before succeeding in creating the incandescent lamp. The lesson here is that humanity is largely a species characterised by a desire to explore and discover, so to suggest that humanity gave up on powered flight is to imply that as a species, we are not driven by innovation. So, for the sake of discussion, let’s suppose that is the case. Writing letters is effective enough of a form of communication, but it hasn’t stopped Hai-Furi‘s universe from developing tablets of the variety that Kouko uses. Consequently, innovation and advancement does exist in Hai-Furi, and since this contradicts the original idea, that humanity in Hai-Furi has stagnated, we can conclude by saying that it is the case that humanity is still advancing, the idea that humanity simply lost interest in powered flight is not an acceptable answer. As such, barring a more detailed explanation from Suzuki, this is not the answer we’re looking for.
Verdict: Busted
Methane hydrate mining cannot cause land to subside, so the alternate time-line in Hai-Furi is implausible from a geological perspective
At Tango-Victor-Tango, one of the tropes I’m least fond of are the “artistic license” ones: inaccuracies committed for the sake of story, in their own words. Tropes seem to love these, because it gives them a chance to show off their own knowledge and intellect. In Hai-Furi, it is supposed that because Japan was involved in the mining of methane hydrate (simply, methane crystallised into a ice-like material as a result of pressure extremities), their economy was stable and therefore, there was never any need to engage in any expansionism. However, Japan became highly dependent on the mining and sales of ice hydrates to the point where they over-mined, causing Japan to sink. Myssa Rei immediately posted the “artistic license” trope under geology, stating that:
The explanation given by Mashiro’s mother for the reason for the subsidence of Japan’s landmass being partly due to the over-mining of the undersea deposits of Methane Hydrate doesn’t make any sense. There’s a chance that she was genuinely misinformed, however.

- There was actually one more myth I was originally looking to write about in this post – shortly before the first episode aired, a blog post argued that all of the characters’ nicknames had been based on popular cat names in Japan. I ended up asking for a source to prove this and received a link for a pet name ranking for dogs, dated for 2018. The names “Mike” and “Shiro” do not even appear in 2018, so that myth was so busted, it didn’t merit a full entry. As it stands, Akeno and Mashiro are not named after cats.

- As Hai-Furi wore on, it became apparent that my speculations were consistent with what ended up occurring, and I found the series to be more than it let in on. Looking back at the discussions at various forums, it became clear that they were likely the reason why Hai-Furi had not been enjoyable for some: people spent more time arguing the withertoos and whyfores that the series original themes, which Yoshida had touched in in her interview, were completely forgotten. In my finale post, I praised the series for having a clear theme despite the hurdles the plot faced, noting that the inaccuracies and liberties taken did not detract from the messages of trust and teamwork even if they had been numerous.

- However, in retrospect, beyond the mechanism for the Totalitarian Virus, everything else in the series stands up to scrutiny: Hai-Furi is not realistic by any means, but how the world was presented was sufficiently well thought-out that the story did work despite the fact that the series felt distinctly cobbled-together. Once the finale to Hai-Furi ended, many of AnimeSuki’s most active participants did not show up for the OVAs or film that followed. In the aftermath, I ended up working with another netizen to iron out the remaining issues at Tango-Victor-Tango. This individual was an active editor there, and I would help them with writing out the Hai-Furi page such that all of the speculation and outdated information sourced from image boards were removed.

- This is the overhead view of Japan that led me to conclude that Hai-Furi‘s geography had resulted from a mining accident, rather than a global rise in sea levels. As it stands, I believe the four myths discussed, and busted, in this post are likely the main details I wished to address. The Totalitarian Virus is a central part of the story and therefore, one’s reception to that is a more accurate determinant of whether or not Hai-Furi would be enjoyable for them. That is to say, dismissing Hai-Furi on account of a torpedo’s damage, whether or not it lined up with The Hunt for Red October, plausibly explained away heavier-than-air flight or was realistic in its geological description of the mining disaster is to be mistaken.

- Admittedly, re-watching Hai-Furi without any of the forum drama going on is how I prefer to watch this series. It’s now time to finish busting the last myth, finish off this post (which has reached 6649 words in length and took seven hours to write altogether), and then return to regularly scheduled programming: immediately on the horizon is Wednesday’s post for the tenth Road to Berlin post, and I need to get a move on the post for Halo 4, having beaten it last Thursday.
Evidently, the Tango-Victor-Tango Department of Geological Sciences does not have mining subsidence as a part of their syllabus: subsidence is the sinking or settling of ground downwards with little horizontal motion, and it has been shown that extensive mining activities can cause the ground to sink. In the case of natural gas deposits, there is a limit to how much the gas can be compressed before it enters the liquid phase, and liquids, being incompressible, will support soil layers above the gas field. Extracting the gas then results in a reduced pressure, and the mass of materials above the deposit will begin sinking. Methane hydrates do indeed have commercial applicability: the deposits around the world are thought to contain as much as ten times the volume of natural gas as known deposits, and Japan has expressed interest in using this as a fuel source: their geologists estimate upwards of 1.1 trillion cubic metres of methane hydrates in the Nankai trough alone. Real-world geological research has thus indicated that Japan does indeed have sizeable reserves, and in the realm of fiction, things have simply been scaled up. As such, excessive mining, coupled with the fact that natural gas extraction could in fact cause land subsidence, is not too far-fetched a concept for setting up how Hai-Furi‘s Japan ended up the way it did.
Experimenting with sea level maps, the image of Japan shown near the first episode’s ending suggests that Japan’s sunk by anywhere from 50-80 metres. However, the Korean peninsula looks relatively unaffected, whereas a 60 metre sea level rise (occurring if all of the world’s ice caps melted) would also be noticeable in that overhead image. The sum of these observations indicate that the sea level rise in Hai-Furi did not result from global warming as a result of burning natural gas: this was something that a few folks at Anime News Network concluded was the actual cause of the events in Hai-Furi, and the anime had simply gone with a different route to avoid the topic of climate change and its impacts on the world. When everything is considered, catastrophic climate change resulting from greenhouse gases was not the cause of Japan sinking: investigation of the consequence of extracting natural gas and assuming that a similar model can be used for methane hydrate extraction at scale finds that it is plausible for such a disaster to occur. Consequently, the claim that Hai-Furi‘s world-building is an example of artistic license in geology is untrue: while admittedly far-fetched, Mayuki wasn’t misinformed in any way. Such an occurrence is not beyond the realm of what is possible given the distribution of methane hydrate deposits around the world and is consistent with what is potentially known to occur with natural gas extraction.
Verdict: Busted
Closing Remarks
Having shown that the theories and research surrounding for Hai-Furi were oh-for-four in this post, the conclusion I leave readers with is really just to approach Hai-Furi with an open mind. Misplaced expectations will inevitably result if any one of these myths were on the viewer’s mind while watching Hai-Furi. The observant reader will have noticed that all of these myths came from Myssa Rei. It is not the intent of this post to cast Myssa Rei in a poor light, but to demonstrate the consequences of basing one’s interpretations and speculation about a series from incomplete details missing context, or speculation from disreputable sources like 4chan. Had I agreed with Myssa Rei, Hai-Furi would not be enjoyable. Akeno making a decision that resulted in the Sarushima’s sinking would paint her as bumbling and incompetent. If Hai-Furi had really been a retelling of The Hunt for Red October, the vastly different themes between the two works would mean that certain events would never reconcile. The lack of powered flight would speak poorly of society in Hai-Furi, giving very little incentive to suppose that the people in charge are competent and able. A lack of a plausible mechanism for explaining why the world was the way it was would imply the writers did not care enough for the final product to make a reasonable world for Akeno and the others, and consequently, there wouldn’t be a reason to root for Akeno, Mashiro and the others. All of these are untrue, and Hai-Furi is, in fact, a moderately enjoyable series.
The point of this post is to demonstrate how exercising my own judgement and forming my own conclusions allowed me to enjoy Hai-Furi. As such, in retrospect, I probably should’ve written this post much earlier, as this would’ve helped to smooth out any inconsistencies as a result amongst the other viewers. Looking back, a common problem that I’ve noticed with news and information of any sort is that, the first person to release it inevitably gains all of the credit for it, and their work is automatically assumed to be correct. Consequently, even if it can later be shown that the first person had been in fact, wrong, and a retraction is issued, the misinformation continues to endure because most people will not be interested in the recanting of outdated, incorrect information. I realise full well this is what’s happening here with this MythBusters-style post: even though I’ve busted four myths in a succinct manner, it is doubtful that Hai-Furi fans will read this post, much less realise that Myssa Rei had been completely mistaken about a great many things. While the ship has sailed for busting Hai-Furi myths (pun intended!), there are two take-away lessons from this post for readers that certainly apply to other series. The first is that when a series is airing, one should always make their own judgements and not allow influential-looking individuals to affect their impressions of a work. The second is that, for a series that has finished airing, someone who sounds authoritative about the work might not always be correct, and again, one’s assessment of said work should be based on their own judgements.