#kny reference

[crescent-blades]

What Rank did Michikatsu [Human Kokushibō] Hold as a Samurai?

When we think of a samurai, we often envision a fierce warrior prepared for battle. While this is partly true, we often tend to forget the internal heirarchy among them. Like any military group, samurai had a clear chain of command for smooth operations. However, it's important to note that samurai were a social class rather than a military one. 

These "ranks," or more so, distinctions within the samurai were closely tied to hereditary social status, the extent of land ownership, and titles within the clan, rather than personal skills, which could vary depending on the era.  

In this discussion, we will concentrate on the Sengoku era, as it is relevant to our topic. I will examine Michikatsu's role based on the available canonical information. 

⚠ SPOILERS AHEAD ⚠ | Masterlist

⨳ Where His Father stood   

In the image above, Michikatsu talks about his father having a "vassal." A lot could be inferred from this, but it is likely that his father either might be a samurai lord [Sengoku daimyo] or a wealthy, high-ranking samurai who supports smaller samurai. 

[Daimyo (大名): military lords who controlled small, unified areas in which all the land either belonged to themselves or was held in fief by their vassals] [Vassals: subordinates who pledged their loyalty and obligations towards powerful lords] 

So essentially, he was not just an ordinary samurai but rather a figure of considerable importance. His possession of vassals and land suggests that he must be exercising some form of governance, implying that he is possibly some sort of lord having an independent clan. 

As you can see, he seemed to have personal servants:   

And also personal messengers:     

Though it is rather difficult to tell whether he was a powerful lord or not—an actual daimyo who was the direct vassal of the shogun, or just a lesser lord having a smaller land—possibly a heir to the family head or a landowner with a fief.

⨳ Was The Tsugikuni Clan Powerful? 

First, let us understand what was going on during that time:  

"This was the 'Age of Warring States', when scores of minor daimyo seized power for themselves in their immediate localities and fought each other until, during the mid-16th century, a comparative handful of 'super-daimyo' competed with each other on a grand scale before Japan was finally reunified" [source]

From this, it seems logical to assume that the Tsugikuni clan was a smaller one rather than a grand one—also considering Michikatsu's father's rather obsessive nature and his intense determination on getting better heirs, even to the point of being willing to harm his own family due to superstitious beliefs. Better heirs: more likely the clan gets to thrive and gain power.

Also, if we consider these words from Kokushibou:  

Notice how he says this—he doesn't seem to be very surprised to know that his clan's name has died out, which would only solidify the fact that his clan must not be very powerful to begin with. [Considering that many direct descendants of the major clans today still seem to be thriving, with many carrying out their clan names. Muichiro seems to be an exception here]   

So now that we know that his clan was likely not a powerful one, we could also assume that his father was a local lord rather than a full on daimyo for obvious reasons. Not only that, but this would also suggest that their clan must be a retainer family—they would be under a much stronger lord—a powerful daimyo, whom they would had to serve.

⨳ MICHIKATSU'S POSIBBLE RANK [DISTINCTION]  

Before moving on, I would just like to point out that holding a high-ranking position as a samurai—such as leading troops— was a result of personal achievement rather than mere familial ties. If a family did not meet the necessary standards of talent and capability, their members would be assigned to lesser roles based on who they served.

With that being said, let us now try fitting in Michikatsu into all of this and find out what military rank he should have based on his family background:

Initailly, I was rather confused and wondered if Michikatsu could be a Hatamoto. They were the highest ranking samurai, considered the most loyal and skilled, who acted as bodyguards towards their lord. Sounds familiar, right? However, there was one piece of canon information that completely debunked this idea:

Samurai usually had to chop off their enemy’s head as proof of their kills; typically that shouldn't be done by the hatamoto, as they typically stayed close to their lords as a last resort instead of fighting on the front lines like the others. 

Okay.. so he probably isn't a hatamoto. If his first instinct was to bring the head of Ubuyashiki to Muzan, then it suggests he must have done this before. if that's the case, then he must have ranked lower than a hatamoto, more so in a class where he might have been around collecting heads. After looking into what the manga could offer, I reached two conclusions:

1. He was a Taisho (大将)[general]: These ranked officials were the generals in the Daimyo's army, leading groups of soldiers called kumi. Depending on the troops they commanded, they were either referred to as Samurai-taisho or Ashigaru-taisho. They usually oversaw multiple kumi, each consisting of around 50 to 100 men. 

2. He was a Kumigashira (組頭) [captain/platoon commander]: These officers controlled and led a single kumi of troops and were called samurai-kumigashira or ashigaru-kumigashira based on the type of troops in their kumi; which, often consisted upto 15-30 men each.

-> By those conical hats (jingasa) those men are wearing, I'm pretty sure they are depicted as Ashigaru foot soldiers. [This explains why he refers to them as his subordinates, as ashigaru were considered lower than samurai.]

Looking at the image, I doubt there are 50-100 men present there, and it seems more likely there are about 15-30. Therefore, we can conclude that he must be an Ashigaru-kumigashira.   

Also, when people talk about Ashigaru, they usually think of peasants taken out of their farms. This is a misconception. Even though they were lower in class, ashigaru were generally treated as full on warriors. Not only were they as capable as their samurai counterparts, some were even stronger than them.The men under Michikatsu's command were fully capable and skilled swordsmen.

⨳ Michikatsu's Troops and His Role:    

A general overview of the make up of the sengoku era army

—In short, the troops were reorganised in Sonae, which had between 300 to 800 men. Each Sonae included various types of troops. They were split into smaller units called Kumi, based on their weapons. These included archers, gun squads, cavalry, spear squads, and standard bearers.

By looking at these images, I see no one holding weapons, just a few casual swords thrown in here and there, which I find to be very odd.. 

Perhaps Michikatsu had set up his base further from his soldiers and gathered them up for a speech about the next day's plans just before they went to sleep? This could explain why they were caught off guard by the demon and didn’t have their weapons ready. After all, it’s strange not to have your weapons out when you are being attacked.   

Regardless of the situation, his troops should be either a spear unit [Yari-gumi (長柄組)] or an archer unit [Yumi-gumi (弓組)].

These troops Consisted of: 1 samurai commander/katana samurai, 2-4 servants, ~20-30 foot soldiers, 3 labourers, 1 cavalry horse, and 2 packhorses.

Why you ask? This is because, firstly; guns weren't introduced until the mid sengoku period in 1543 [Michikatsu is theorised to be born around 1432] In the cavalry unit, the troops consisted of samurai rather than ashigaru, and bannermen did not engage in battle. 

MICHIKATSU'S ROLE: Although there is not much provided anywhere about these commanders, from everything I have gathered: These commanding officers used to lead a unit of ashigaru soldiers. They were ranked below the sodaisho and samurai daisho (commanders) and an ashigaru taisho.

He would be assigned to train them, discipline the foot soldiers, and turn uneducated common men into reliable warriors. He would command and lead them, ensuring everyone followed his commands and maintained order within the ranks, and not disrupt the hierarchy. Hmm that sounds familiar doesn't it?

[I might actually make a detailed post about the military formation with Michikatsu if any of you are interested.]   

Final thoughts: 

[A/n: Hello everyone! It's been a while since my last post. No, I haven't abandoned my blogs. I just took a short break last week. Now I'm back and eager to share a theory with you all! Which I will be posting more of, both here and on my other blog, @gilded-sunrays. Please feel free to share your insights!]  

And if you've made it through all of this, then I thank you wholeheartedly!

[demonslayedher]

Sanka: Mountain-dwellers not integrated into society

“What’s the shape of that cloud?” Not something that seems very important at a Hashira meeting, but perhaps something Muichiro used to know and pay close attention to. After all, not taking nature seriously enough can have dire consequences when you live and work in the mountains.

I’d like to dive a little into what it meant for the Tokito twins to have grown up in the mountains, keeping to themselves. These sorts of people, who were not integrated into society and may not have kept up with newfangled Meiji and Taisho societal regulations, were often called “sanka” by the people who lived in mountain villages and knew of them. The kanji used might vary from region to region, and their relationships to the sanka might vary depending on location and time period. After all, it was often people ostracized from society who had no choice but to live apart from it.

The "satoyama" areas

To back up a bit, many people lived in mountains. Depending on how you define it, two-thirds to three-fourths of Japan’s land is mountainous. Many of those mountains are too steep or treacherous to be hospitable to humans, but wherever they could, people made do.

Thus, you often found the rural areas split up into different zones: the villages people inhabited (hitozato), the deep mountains (okuyama), and the crossover zone between them, the satoyama. Literally, “village mountain.” These were the areas where people would venture into the mountains to collect from the bounty of the mountain.

Nowadays, “satoyama” is an important term when it comes to both retaining traditional culture and managing natural resources (and many, many organizations throughout Japan are dedicated to helping people learn about and experience satoyama practices). The Japanese Ministry of the Environment defines satoyama as areas consisting of farmlands, irrigation ponds, secondary forest, plantation forest, and grasslands around human settlements, but that does not quite capture the human element. Like in other places around the world, people who rely on mountains have developed knowledge of the natural world and used that to collect supplies like food, medicine, and timber, and they have managed the forest to maximize these benefits. There are entire habitats that other species would lose if humans were to stop managing those places now.

To place it in perspective, the Kamado family lived in, relied on, and managed the forest so that they could have a steady supply of their livelihood: charcoal. They fed themselves with fish from the river and edible mountain plants, but they also relied on the village below, whom they were economically and socially intertwined with. They lived a satoyama lifestyle.

But would we call them sanka?

Who were sanka, and how many were there?

Because sanka removed themselves from society, they did not impact a lot of Japanese history and culture. Hence, there is not much information to go on.

Way back in history, there were always people relegated to the mountains because they did not accept the rule of the Yamato clan (aka, the source of the imperial lineage). Many of these people became the sources of oni legends too, demonized by those who left a more tangible impact on Japanese culture. However, as the centuries went on, there were also rumors about, say, samurai who lost big wars, or who left their samurai lives behind and had nowhere to go but the mountains if they wanted to be left in peace.

There are even rumors that after the fall of the samurai in the Meiji Restoration, many of them became sanka. This was well over three decades before Yuichiro and Muichiro were born, so it’s possible that their grandfather was the most recent samurai of their family. If we consider generational trauma, it’s not a far stretch that this urgency to hide away from society might have led Yuichiro to be especially worried for their safety and disillusioned with the expectations of warriors.

However, it is hard to say for sure. Because they did not register themselves and their families like law-abiding citizens did, and because they were not a big topic of cultural study, it is hard to say anything for sure, but according to Professor Owada’s estimate in “Japanese History of Demon Slayers” (a book that is not officially tied to Kimetsu no Yaiba but rode on the tails of its success), there were maybe 200,000 sanka throughout Japan in the Meiji period (1968-1912), and by about the 1940s, there may have been about 10,000. They almost entirely disappeared within about ten years after that.

If we compare those numbers back to the Kimetsu no Yaiba timeline (with the majority of the plot having most likely taken place in 1915), that means there were plenty of mountain-dwelling, not-exactly-following-all-the-newfangled-law characters, and if Tanjiro only lived until the age of 25, he could theoretically have not had any reason to leave his humble mountain abode the whole time. However, at some point his descendants quit making charcoal and moved to the city.

Among sanka, there was likely a lot of variety, both in terms of how much they interacted with human settlements and in what sort of work they specialized in. For example, many people are familiar with the term “matagi.” They are sometimes referred to as hunters, especially for bears (like Yae and her father in the Tomioka Gaiden, or Urokodaki’s friend who was mentioned in a fanbook for having found Giyuu and introduced him to Urokodaki), but matagi could be just as well-versed in plants and medicine. Other people, like “kijishi,” were skilled in making everyday ideas out of materials from the mountains, and they would exchange their wares for what they needed from people in settlements.

Then we have “somabito,” who collected and delivered wood. This is where the Tokito family found their niche.

It is probably thanks to these activities that they procured, say, the kitchen knife that Yuichiro used for cutting daikon. But as for how warmly the nearby village treated them, who knows. Yuichiro’s attitude was probably to go to the village, do only as much business as necessary, and then leave, for he may have felt that their family was distrusted because they were sanka.

Mt. Kagenobu: The Tokito family home

According to the first fanbook, Muichiro is from Mt. Kagenobu, a 727-meter mountain on the border of what would now be called Tokyo Prefecture and Kanagawa Prefecture. It is not a mountain I have been to, but as I understand, it’s not that bad of a climb for beginners (but you should still be adequately prepared). Depending on your course, it can take about 60-80 minutes to climb to the top. Even if they did live near the top, that’s not too bad of a trip for Amane-sama to take several times. However, even a satoyama area still has mountain dangers. Oni, for example. And places where you can slip and fall to your death, rain or no rain.

These are things that are probably engrained in Muichiro, whether he consciously remembers them or not. Plants, weather, animals, searching for and preparing food; somewhere inside of him, even at his foggiest, he probably still knew how to do all this.

And, maybe somewhere in how Yuichiro influenced him, he felt distanced from other people.

However, that’s not the only reason a warrior might wish to run away to the mountains, is it? After all, that is where they and their loved ones might live in peace and be happy.

Two more quick facts:

There is a tea house on Mt. Kagenobu that posts photos of the Mt. Kagenobu landscape, which might be very handy for fic writers, or just plain nice for Muichiro fans to check out! Yes, they are totally aware of Muichiro and love having that connection.

There is a kind of cherry blossom on that mountain called “kasumizakura.” Yes!!! “Mist” sakura!!!!!!!

[abbyfandomgalaxy]

So I've been working on recently making a demon slayer/kny oc, but to do that I needed to learn the art style first. So I traced some of the bodies of the adult women in the series(Shinobu, Mitsuri, and Tengen's wives.) to learn how to draw the adult female bodies in the kny art style, and the eyes of female characters to learn how to draw female eyes in the art style. I'm posting what I created here in case anyone else wants to use them as a base or a reference. If you post them somewhere else please credit me!

[e-adlirez]

quote adapted from Kimetsu no Yaiba/Demon Slayer, chapter 175a

[dark-raven-666]

Demon slayer masterlist

- monster energy drinks I would assign each hashira

- monster energy drinks I would assign each hashira p2

- monster energy drinks I would assign each upper moon p1

- monster energy drinks I would assign each upper moon p2

[thebardisabird]

ILLEGAL ILLEGAL THIS SHOULD BE ILLEGAL

[demonslayedher]

Do you have any more depth information about the format about the houses in the kny universe? Like what’s the layout and the name of the stuff in Urokodaki’s house, or the Kamado family home/hut. You know stuff like that. Or just general stuff about Taisho or Meiji era home layout

Oh boy Anon, this is the book you want to find:

It's got designs for all of the settings in Season 1, including layouts for a few of the small homes (not the mansions; in those cases only the relevant spaces are included). I am not a source for scans and prefer only taking samples from my book collection, so here are a few of what I think would be most useful to you:

The Kamado house (which, canonically, got its start in the Sengoku period, though perhaps it has been rebuilt a few times or piece by piece):

Old man Saburo's place (note the tools for making umbrellas, his trade. This one also shows futon in the closet):

Urokodaki's place:

As for other settings, Western-style architecture was in use to varying degrees in cities, mansions tended to be more comfortably updated versions of mansion used in Edo, and two-story "machiya" style townhouses with electricity were very common, even in the town Tanjiro sold charcoal in. Poor/common urban people tended to live in long housing complexes with shared facilities called "nagaya," which there are many examples of in flashbacks in later seasons.

I suggest looking for basic introductory books about the architecture of Japanese houses to learn the terminology (while looking for one highly technical example I couldn't remember the name of I found a whole bunch of ones originally written in English which are probably more accessible, though I haven't read them. Hopefully your library has a few).

That said, a lot of my experience with them comes from actively visiting a lot of them, as well as visiting museums. If you ever have the opportunity to travel in Japan, visit as many restored or retained historical houses (of all kinds) if you can! There are many examples from the Edo period and later, and a few places that reconstruct dwellings from earlier time periods.

Just one thing I will point out here: the earthen floor in messy storage and cooking areas is called a "doma," but that has nothing whatsoever to do with "Douma." The pronunciation and kanji are both different.

[demonslayedher]

Determining Ages and Birth Years

Kimetsu no Yaiba’s first official fanbook gave us ages for the many of the main characters, but in a manga where calculating age can be crucial, why are these numbers not so straightforward? Because the Japanese calendar is a mess, and the Taisho period was an in-between stage in many ways. Many new changes were established in the Meiji period but not broadly enforced until the Showa period, including how to count one’s age.

This subject can be terribly complicated, but please follow me below for:

--Historical context for how methods of counting age could differ --Which method I choose to apply to Kimetsu no Yaiba and why --Based on that, a list of my calculations for dates of birth, zodiac signs (Chinese and Western), and because it’s handy, the date each of these characters would have turned 25

In the Taisho period, there are two methods of counting age in play:

Kazoedoshi (“counting years”): Counting the years one has been in alive in, with that year having started on the agricultural new year and counting a new year to one’s age each New Year’s Day after that, like how it is still practiced in South Korea.

Which is to say, you are born at age 1, counting the first calendar year you lived in, and on the following New Year’s Day, you are age 2, even if you have only been out of the womb a very short time.

Mannenrei (“full year age”): Counting only each full 12-month period since your birth as part of your age, like how it is practiced in the United States of America.

Which is to say, you are born at age 0, and after twelve full months have passed, you are age 1.

Kazoedoshi was practiced through most of the Demon Slayer Corp’s history, but the Meiji government enforced a switch to Mannenrei in 1902. However, most people still practiced Kazoedoshi throughout the Meiji, Taisho, and early Showa periods, and it wasn’t until 1950 that the government reinforced the switch to Mannenrei. This is also when, with the influx of American culture due to the post-war occupation, individual birthdays started to be marked with cake and presents. Until that time, people did not pay much attention to their date of birthday besides, perhaps, a passing notion and maybe a shrine or temple visit and a nice dinner (see more on this post). Many people continued to count their own age in Kazoedoshi until 1950, and although some people liked the “oh, actually I’m younger than I thought I was!” surprise (because Manrenrei really was outside of their usual way of thinking), it made centenarians a little sad that they hadn’t actually reached 100.

Similarly, even though the Meiji government enforced a switch to the Gregorian calendar which put New Years on January 1, many people still celebrated a sliding date according to a lunar-based agricultural calendar, like is still done in China. It was likewise later reinforced.

In modern Japan, New Years on Gregorian January 1 and counting age by the Mannenrei system are the norm and standard, however, some customs (especially but not limited to religious customs) are still celebrated according to the agricultural calendar and Kazoedoshi ages. It’s annoying to keep track of and if I had a 5-yen coin for every time I say the Japanese calendar is a mess, I’d have a lot more yen.

The canon of Kimetsu no Yaiba does not specify any of the following: 1. What year most of KnY takes place (but based on clues from the Hand Demon, we can extrapolate that most of it takes place in 1915) 2. Whether the characters’ given ages are according to Kazoedoshi or Mannenrei, and whether the characters’ given birthdates are according to the Gregorian or agricultural calendars 3. Which method the characters use to count New Years and their own age 4. If there are any differences among the cast and how they count these things (like if the city-slickers were with the times and the country bumpkins were not) 5. Whether or not Amane accounted for Mannenrei or Kazoedoshi when stating that all the marked swordsmen of the Sengoku period died by the age of 25

So what are fanfic writers who are preoccupied with canon accuracy to do? How much should the fans of characters who got the mark fret?

After tying my brain in knots (for years, since I attempted tackling this issue years ago and this is my better post addressing the issue(s)), here are the ways that I approach it.

First: I firmly treat most of the events of canon as firmly taking place in Gregorian 1915, with the Final Selection taking place that winter and Muzan’s defeat coming sometime around the very end of 1915 or start of 1916. (See here for how I calculated all the time frames indicated in canon. You’re welcome.)

Second, we have to treat the official fanbook material in the context of how it was published. I think the ages in the fanbook are given in Mannenrei for the benefit of Heisei/Reiwa period readers, but if you really want to dig into it, the characters might interpret their own age differently based on Kazoedoshi, since it was such a prevalent way to count one’s age even for people born in the Taisho period. For example, Tanjirou’s given canon age is 15 (Mannenrei), but if you ask him in-universe, he might say he is 17 (Kazoedoshi).

Even if we assume many of the characters use the agricultural calendar and Kazoedoshi, there is a chance that characters who actively used western technology—for example, Shinobu, who uses textbooks in English microscopes and thermometers that likely came from Germany—had switched to Mannenrei for the sake of more accuracy on an individual basis. It is also possible that the Corp enacted their own standardization to Mannenrei around the time they standardized uniforms and updated the payment structure. If this is the case, it might have required country bumpkins to rethink the systems they had always been used to. Tanjirou, if asked in-universe once he is a Corp member, would therefore say he is 15 (Mannenrei).

The places the Kazoedoshi/Mannenrei difference has more implications is where characters have stated their own age. For example, Himejima seems to use a Mannenrei system (he states that he became a Hashira at age 19, and now is clearly over the age of 25, with his canonical age being recorded as 27. The numbers check out). This makes me more curious about Muichirou, who has a canonical given age of 14, but says in his own recollection that he was 10 when he was orphaned, and 11 when Yuichirou died.

If Mannenrei: It was four years or more ago that his parents died, and then sometime after he and Yuichirou turned 11 on Gregorian August 8, the demon attacked on a hot summer night. If Kazoedoshi: It was four years or more ago that his parents died. New Years passed that winter and he and Yuichirou turned 11. Many more months passed before the demon attacked on a hot summer night. However, if the Corp enforces his Mannenrei age of 14, but being a country bumpkin with a fuzzy memory, Muichirou still thinks of himself in Kazoedoshi, thereby making him think of himself as 16: It was six years or more ago that his parents died. New Years passed that winter and he and Yuichirou turned 11. Many more months passed before the demon attacked on a hot summer night. He nonetheless became a Hashira relatively recently (according to aligning Kyojuro-related flashback material and the second fanbook making passing mention that he hasn’t been a Hashira that long so his impression of the others isn’t that deep). This implies he spent a very, very, very, very long time incapacitated before he could so much as hold a sword, let alone join the Final Selection.

So what if we consider the opposite, that every given age is in Kazoedoshi? That would mean that when the fanbook and Tanjirou say he is 15, we would translate that back to a Mannenrei age of 13. And, dear readers, do you really want to imagine the entire cast being one or two years younger than their given age? I didn’t think so.

It is already very, very difficult to determine the order of Kimetsu no Yaiba canon both due to incomplete histories and canonical errors introduced by outside material (Ufotable animating Kanao’s May 19 encounter with the Kochou sisters with a winter setting, or Hirano-sensei drawing a spread of all nine Hashira in a 1913 setting) or timeline errors introduced in the original manga likely due to oversight (Gotouge drawing Aoi in uniform shortly after Kanae’s death when Aoi is later stated to have attended the same Final Selection as Muichirou, who at the time Kanae died is likely still living with his parents). That is why I assume the following rule of thumb:

When ages are given in-universe or in supplementary material, assume it is Mannenrei, because this is a shounen manga and not a math textbook. (As another case in point, the heights of the characters would have made most of the characters giants in Taisho society, though they get away with just being a bit on the tall side in Reiwa society. Some things are simplified for the benefit of modern readers.)

Assume the characters do not pay much attention to their age, or their birthday, because this is a shounen manga with a lot of dedication to historical settings and folk traditions (and those folks didn’t pay much attention to their birthdays).

Ergo: If the Corp tells its members “this is your Mannenrei age, use it. When we say 25, we have already done the math from our Sengoku period records and we mean 25 in Mannenrei,” the Corp members probably accept that. However, the Corp members might think of it as having two ages for two different purposes. Given the prevalence of Kazoedoshi, in their heart, they might still think of New Years as the time when you collectively celebrate everyone’s birthday.

Since I’m assuming Mannenrei, I’m also assuming Gregorian birthdates, and assuming everyone’s given canon age to be the age they were during the Infinity Fortress battle that took place roughly around New Year’s Day 1916.

Why am I picking this date? Because this is when the first fanbook was published, and it treated canon as it was occurring at that time in publication, so Akaza, Douma, and Kokushibou were not yet given the “eliminated” status (also, Rengoku was given already called “former” Flame Hashira. Shinobu’s demise had not yet been published in the serialization).

I also say “roughly New Year” because of the agricultural/Gregorian calendar issues. The agricultural New Year’s Day in 1916 would have fallen on Gregorian February 4, but because I’m treating this as the Corp having adopted Mannenrei, I’m also having them treat Gregorian January 1 as New Years. Because Ubuyashiki Nichika and Hinaki were singing a New Years song when Muzan strolled in to visit, that leans credence toward it happening around then. More crucially, cherry blossoms are in full bloom “three months later,” which aligns it best with Gregorian January 1, since late March/early April is when you are most likely to get the full bloom of the most common somei-yoshino cherry trees.

It’s also a convenient date and time in the plot to measure by because all their birthdays would have passed for that year, barely including Nezuko’s. (But if Mugen Ressha took place prior to May, like I have calculated before… does this mean Rengoku would have been part of Team 21? My gosh, I’m crying. For this list, I’m treating it as the age he would have been relative to the others on that date.)

Tl;dr: I’m assuming you can treat every canon age as Mannenrei, and totally ignore Kazoedoshi in the first place (unless if it will help you be crafty in your fic, because there’s still a good case to be made for the characters using it).

Now here is the fanfic reference list I promised, including: 1. Their date of birth according to the Gregorian calendar, calculated based their canon age being their Mannenrei age as of December 31, 1915. 2. Their birth year according to the Japanese period 3. The year they would have turned 25 4. Their Chinese zodiac sign (yes, I know there is argument about whether or not you can say “zodiac” here, but this isn’t the place to start a new topic. Anyway, I’ve also included the elements for each year for the deep nerds who anticipate it) (also I’m really sorry, Inosuke is not born in the Year of the Boar, nor is Iguro born in the Year of the Snake) 5. Their Western zodiac sign (yes, I know there was a recalculation of sun signs some years back, but no, I’m not bothering to take that into account, this post is complicated enough as it is) Important caveat: I'm bad at math.

Kamado Tanjirou: July 14, 1900/Meiji 33 (1925/Taisho 14), Metal Rat, Cancer Kamado Nezuko: December 28, 1901/Meiji 34 (1926/Taisho 15), Metal Ox, Capricorn Agatsuma Zenitsu: September 3, 1899/Meiji 32 (1924/Taisho 13), Earth Boar, Virgo Hashibira Inosuke: April 22 (as was written on his fundoshi along with his name), 1900/Meiji 33 (1925/Taisho 14), Metal Rat, Taurus Tsuyuri Kanao: May 19 (chosen for the day she encountered the Kochou sisters), 1899/Meiji 32 (sometime in 1924??/Taisho 13??), Earth Boar(?), Taurus (???) Shinazugawa Genya: January 7, 1899/Meiji 32  (1924/Taisho 13) – by Gregorian/modern Japanese system he is an Earth Boar, but the agricultural New Year wasn’t until February 10 that year, so he might instead be considered an Earth Dog, Capricorn Tomioka Giyuu: February 8, 1894/Meiji 27 (1919/Taisho 8), Wood Horse, Aquarius Kochou Shinobu: February 24, 1897/Meiji 30 (1822/Taisho 11), Fire Rooster, Pisces Rengoku Kyoujurou: May 10, 1895/Meiji 28 (1920/Taisho 9), Wood Sheep, Taurus Uzui Tengen: October 31, 1892/Meiji 25 (1917/Taisho 6), Water Dragon, Scorpio Kanroji Mitsuri: June 1, 1896/Meiji 29 (1921/Taisho 10), Fire Monkey, Gemini Tokitou Muichirou: August 8, 1901/Meiji 34 (1926/Taisho 15), Metal Ox, Leo Himejima Gyoumei: August 23, 1888/Meiji 21 (1913/Taisho 2), Earth Rat, Virgo Shinazugawa Sanemi: November 29, 1894/Meiji 27 (1919/Taisho 8), Wood Horse, Sagittarius Iguro Obanai: September 15,1894/Meiji 27 (1919/Taisho 8), Wood Horse, Virgo

Afterword:

Suppose Amane didn’t do the math to state the Sengoku swordsmans’ ages in Mannenrei terms? What if their records were spotty, or she took Kazoedoshi and applied it to swordsmen who now use Mannenrei?

Well, in that case, Tanjirou would probably die sometime in 1923, and Giyuu & Sanemi sometime in 1917. Ergo, I think I will stick with Amane having done the math and converted Sengoku ages to Mannennei if she was going to tell them all something so important.

Also, using Kazoedoshi would totally mess with the Kimetsu Gakuen AU.