Unlike all other marks users in his era, Yoriichi was able to defy fate and lived to about 85 years of age (the average life expectancy during the era Yoriichi was presumed to have been born was between 30 ~ 50 years).
Shortly before his death of at least 85 years in age, he battled his older twin brother, Kokushibo who turned into a demon.
Only two Slayers were ever known to be older than 25 with a Mark. Yoriichi lived till old age, likely due to him having been born with the mark and thereby avoiding the curse altogether. Gyomei on the other hand did not activate his Mark until he was already older than 25.
2) Kokushibo - 480 years
Kokushibo was Yoriichi Tsukiguni's brother. He was the first demon who could use a breathing style since he invented the Breath of the Moon.
However, Tanjiro is not a descendant of Yoriichi Tsukiguni. Tanjiro is the descendant of someone who knew Yoriichi personally and was a good friend of his as well. Sumiyoshi was rescued by Yoriichi when a demon threatened his life. Since then Yoriichi often met him and they became close acquaintances.
Tanjiro's connection to Yoriichi is not through blood relation, but through their similar appearances, which is due to the divine nature of Sun Breathing. (Also Read: Did Demon Slayer hire a Bollywood director for Season 3? Fans speculate!)
Many Kimetsu no Yaiba fans deduce that Yoriichi is Tanjiro's father, but that isn't the case. However, Yoriichi is responsible for teaching Tanjiro's ancestors the Hinokami Kagura, which has been passed down for generations.
1 Gyomei Himejima - The Stone Hashira
The oldest of the bunch, the Stone Hashira, Gyomei Himejima is 27 years old.
that his body might have adapted to the Mark pattern. and some resistance to its side effects. this is how Yorichi lived 80 years despite being marked, as his body got used to it since his birth.
Shinobu Kocho is a capable Demon Slayer whose worthy of being the Insect Hashira. That being said, she's arguably the weakest Hashira when it comes to pure strength.
But if we are talking about the human form, then it's a big fat NO, because Tanjiro has just mastered the Sun Breathing whereas Yoriichi is the inventor of it, also he's way more powerful and holds an unfathomable battle intellect, larger than any Demon Slayer in history, so in conclusion, no one is remotely close to ...
The reincarnation theory suggests that Tanjuro is a reincarnation of a former demon slayer -- specifically, Yoriichi Tsuginkui. Yoriichi was regarded as the strongest demon slayer and the inventor of sun breathing.
Yoriichi Tsugikuni died of old age in his final confrontation with his older twin brother Michikatsu Tsugikuni (Kokushibo).
Unlike all other marks users in his era, Yoriichi was able to defy fate and lived to about 85 years of age (the average life expectancy during the era Yoriichi was presumed to have been born was between 30 ~ 50 years).
Yoriichi was the very first user of the Breathing Styles and he came up with Sun Breathing, a powerful breathing form that is known to be the most effective against demons. It's through Sun Breathing that all the other Breathing Forms have been derived.
He was born with a Mark. Therefore, he lives longer than the rest of the Marked Ones. because his body is just normalized with that condition.
What is the Yoriichi Type Zero mechanical doll and who built it? During episode three we learned that the Yoriichi Type Zero was built by Kontetsu's ancestors more than 300 years ago, during the Sengoku era.
Well, if Yorichi ever became a demon, the results would be catastrophic. Yorichi will become the strongest demon in existence, second only to the Demon King himself, Muzan Kibuzuchi. He will use sun breathing as a fighting style.
Tanjuro Kamado – Sun Breathing Style
Tanjuro was Tanjiro's father, who was also born with a mark. However, despite being a user of the Sun Breathing Style, his mark was underdeveloped and looked more like a burn scar. Despite that, the power it granted Tanjuro was exceptional.
12) Tengen Uzui (23)
The Sound Hashira, Tengen Uzui, is the second oldest in the main Demon Slayer cast.
Muichiro Tokito's character received an immense amount of growth in the Swordsmith Village. As the youngest hashira, Tokito is still discovering himself as a person unlike his sword-skill.
Muichiro Tokito, the Mist Hashira
A descendant of Upper Rank One Kokushibo, Tokito is only 14 years old. With mint green as his signature color, Tokito is spacey and wanders off, seemingly in his own world.
The warrior Muzan feared was a swordsman named Yoriichi Tsugikuni. Yoriichi was the only slayer before Tanjiro who came close to killing Muzan, and the flashback of their fight occurred in Chapter 187.
Tanjiro's ancestor was a good friend of Yoriichi and arguably was one of his only true friends. Therefore Yoriichi gave the earrings as a gift, and since then they have been passed down the generations until they reached Tanjiro.
Is upper rank one Tanjiro's father? No, they are not related. Tanjiro, by PURE COINCIDENCE, heavily resembles Yoriichi Tsugikuni, the creator of Breath swordsmanship, the only other person to use Sun Breathing, and the only person Muzan ever feared.