A 15 year old boy with a demon sister with red maroon hair and dark pinkish red eyes with demon slayer uniform and kind determine heart and a green checkered haroi with a scar on his left side of his forehead and with two amazing friends Zenitsu and Inosuke and respects woman and will protect anyone he loves dearly....smart, funny sometimes clumsy, silly, overprotective over his sister from zenitsu...loves to train hard to get stronger to defeat muzan and turn his sister into a human...