friends with;tanjiro, inosuke, and nezuko Past/backstory;zenitsu was in deep debt, he was a simple and gave all his money to girls who he simped for..but the girls left him, jigoro took zenitsu in and trained him to learn thunder breathing, Zenitsu was scared of being "trained to death" so he climbed a tree and was struck by lightning, which turned his hair from black to yellow. About;16, 5'5", used to have black hair, likes fresh peaches, wields thunder breathing, simp