That's not gonna end up well...
Nah, I got this. Trust me. I can fix the entirety of the internet.
IT HAS BEGUN. lol
To be serious for a second, I did my due diligence. I did a deep dive. Let me tell you what I found.
There are literally no official sources, in-game, artbook, etc., that I can find that would indicate that Soul Edge occurred in 1584, SC in 1587, etc. Not in English nor in Japanese.
Now, I can specifically cite from the Soul Edge Japanese website, that Mitsurugi's second Edge Master scenario, where he visits the pirates of Noshima Castle (incorrectly translated as Notō Castle in the English game) is happening in September
1583. That has been there for everyone to see for...all of the years up until now, I would think. Obviously before SCV was even a thing.
バンダイナムコエンターテインメントの公式サイトです。スマートフォン向けゲームアプリや家庭用ゲーム、ライブ、イベントなど、多彩なエンターテインメントをお届けしています。
www.soularchive.jp
In addition, the only source material for anyone's birth year that I can find is Mitsurugi's, again from the Japanese Soul Edge website, Hilde, where the New Legends artbook says that she's 11 in 1583, making her birth year 1572, and perhaps Ivy's, where it states in the artbook that Cervantes impregnated her mom in 1558. From there, if her birthday is really in December (probably just the day she was found on the doorstep), given how human gestation works, that pretty much means that she was born in 1558. These wikis say 1559. The only way that would make sense is if her birth mom kept her several months before giving her up. But, we don't know that. We don't really know any of it.
The bottom line is the games/official sources only list characters' ages, and 98% of the birth years on any of these wikis were made up probably from math. Birth years aren't even mentioned in SCV otherwise. Everyone can go search for this info themselves to confirm.
I can only conclude that the original sin was that perhaps someone, years and years ago, saw Mitsurugi's birthday somewhere, 6/8/1562, also saw that the game took place in 1583, and then saw that the game lists him as 22, and made the assumption that the devs don't know how to math. But, that person did not know about Japanese classical age reckoning, which technically made him 21, and that everything was above board. This goes very well with how in Mitsu's site profile, they use classical Japanese height (shaku/sun) and weight (kanme) measurements as well.
バンダイナムコエンターテインメントの公式サイトです。スマートフォン向けゲームアプリや家庭用ゲーム、ライブ、イベントなど、多彩なエンターテインメントをお届けしています。
www.soularchive.jp
The "fix" was to accept that maybe SE happened a year later than they said. But that was wrong to do. The actual confirmation on that doesn't exist. It was just a
phantom assumption that has snowballed for literally years.
Outside of Soul Edge, Soulcalibur V, and Soulcalibur VI, anything regarding the timeline was only spoken about in non-specific terms. "The 1550s", "For over 20 years", "The end of the 16th century", "3 years later", etc.
My guess is that, given that SCV was
supposed to be super story driven before it got taken out in the back and shot, SCV was the first time that they laid out everything in detail. They included all the stuff that had been mentioned in the previous games and artbooks, but spelled out the concrete years, hence that above timeline page. And all that compiled info can also be found in SCVI's museum. The museum is just all the stuff that's been in the artbooks and such. It's the same stuff. And the years involved in everything are the same. And SCVI's story modes are literally staring you in the face, telling you when the Evil Seed happened (1583), and when Inferno got got (1586).
So, that's the TED Talk. If anyone has sources that fly in the face of any of this, then let me know. Otherwise, so begins the crusade. lol