Webkokushibo was a very powerful and skilled swordsman, and he is considered one of the strongest members of the twelve kizuki. Webas a human, he was a powerful swordsman and respected member of the demon slayers corps. However, he was never able to step out of the shadow of his twin,. Webdive into the dark allure of kokushibo, an upper rank one demon in 'demon slayer: Explore his role in the twelve kizuki and his profound impact on the. Webas a human, kokushibo lived during the sengoku era nearly five centuries ago and was a samurai by the name of michikatsu tsugikuni (継国 巌勝 tsugikuni michikatsu), as well as the older twin brother of yoriichi tsugikuni, the progenitor of all breathing styles and the strongest demon slayer to have ever lived. Webkokushibō holds the upper 1 rank, marking him as the most mighty demon in this already fearsome group, and he is second only to muzan kibutsuji, the demon. Webkokushibo is one of the major antagonists of demon slayer. Before he became a demon, he was a human named michikatsu tsugikuni, who happened to be a. His abilities have been refined to his highest potential with his total mastery.
