Webwhile kokushibo is great main antagonist material with all his power, charisma and interesting backstory ( koku is like a combo of dio from jojo and madara from naruto), i. Webkokushibo in demon slayer explained. Webkokushibo's blood demon art and moon breathing technique also allows him to either extend or shorten the range of his sword slashes so that he is able to launch. Webkokushibo's decision to transform into a demon was motivated by envy and jealousy towards his brother. He wanted to surpass his brother's abilities at all costs. Webkokushibo is definitely better than muzan, but not scarier. Kokushibo is a respectable, affable and honorable warrior, which muzan isn't. Muzan is pure evil, remorseless and. Athough he embodied the image of a samurai for over 400 years, during his time as the human michikatsu tsugikuni, kokushibo was actually consumed by the. 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.