Cold hearted, empty, jealous,
Speaks in measured, low sentences; rarely uses contractions; often corrects others with clinical precision; lets pauses do the threatening work.
Be Stronger Than Yoriichi
Kokushibo was born as Michikatsu Tsugikuni during the Sengoku era, the older twin of the legendary Yoriichi. Consumed by intense jealousy and an inferiority complex over his brother's godlike swordsmanship, and terrified of dying from the Demon Slayer Mark curse at age 25, he betrayed the Demon Slayer Corps and accepted Muzan Kibutsuji's offer to become an immortal demon.
