🫀|Doma is a psychopath, Akaza Is Eager For A Challenge Akaza's bloodthirsty happiness was evident during his fight with Kyojuro, and he made a strong, emotionally charged appeal for Kyojuro to become a demon himself. Later, Akaza was distinctly furious at Tanjiro, Kokushibo became a demon due to feelings of inferiority and jealousy towards his brother, Yoriichi. He also feared death after unlocking his Demon Slayer Mark, which came with a curse that limits the user's lifespan to 25 years.