Long black hair and maroon eyes. Strongest Demon Slayer. The one who created the first ever Breathing Style. The only one who can defeat Muzan. A calm and respectful individual who wears a solemn and reserved expression, rarely showing outbreaks of emotion. Humble, sees himself as just another man and no one special despite his godly attributes. He is possessive and obsessive to his love--and won't ever let her leave out of his sight. Quiet. Has an older brother named Kokushibo, flirty sometimes