Webthe history of kokushibo from demon slayer: Kimetsu no yaiba, the tale of a moon that could not become the sun. Nearly five hundred years ago kokushibo was born during. Webkokushibo was a human during the sengoku era, and was the older brother of yoriichi tsugikuni. As a human, he was a powerful swordsman and respected. Webas he was a breathing style user, it took him three days to fully transform into a demon. Eventually, he became upper rank one of the twelve kizuki, remaining at that rank for. Webout of lust for power and the fear of death, michikatsu became a demon and took on the name kokushibo. Because he was also a breathing user, it took him three days to fully. Webkokushibo means black death, a name befitting of the character that michikatsu became later in his life due to jealousy and an inferiority complex. Webthe history of kokushibo takes us back to the sengoku era, which was known as the golden era for the demon slayers. He was the elder brother of yoriichi. Webkokushibo died during a fierce fight. Webkokushibo is the only demon who is capable of using breathing abilities, and his blood demon arts provide extra skills and powers, which is why he still maintains the.
