Within the world of Demon Slayer, there exist the Hashira, an elite group considered the frontline troops of the Demon Slayer ...

Fans may have noticed a distinct resemblance between Kokushibo and the legendary demon slayer Yoriichi. On top of that, the mere fact that a demon wields a katana may seem strange to fans.

Demon Slayer features Yoriichi Tsugikuni, a legendary figure. He was the first Demon Slayer from the Sengoku Era. Yoriichi created the Sun Breathing style. Tanjiro Kamado is his descendant.

Muzan's backstory is similar to this demon and the manner in which Muzan treated him is proof enough (Image via Ufotable) Demon Slayer has some of the most nuanced and complex characters in anime.

Demon Slayer: Kimetsu no Yaiba follows Tanjiro ... How He Died: Killed by Upper Rank 1 demon Kokushibo When: Infinity Castle Arc Muichiro Tokito, the Mist Hashira, was calm and extremely powerful.