Yoriichi Tsugikuni created Sun Breathing, influencing other Breathing Styles like Water and Flame. Yoriichi possessed powerful techniques like Transparent World and Selfless State for battle. Few ...

Kokushibo's birth name was Michikatsu Tsugikuni and the twin brother of Yoriichi Tsugikuni, deemed as the most powerful demon slayer ever. Upon awakening his demon slayer mark, Michikatsu feared ...

Kokushibo and Yoriichi share a deep connection through brotherhood and the development of breathing styles. Yoriichi trained demon slayers but failed, leading to the creation of the unique ...