Webkokushibo (黒 (こく) 死 (し) 牟 (ぼう) , kokushibō?) is a major supporting antagonist of demon slayer: He is a demon affiliated with the twelve kizuki,. And the most powerful of them is still yet to appear in the film. Webkokushibo, also known as michikatsu tsugikuni, is the upper moon 1 in the demon slayer anime. He is one of the most powerful demons in the series, and his st. 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.
