Giyu Tomioka is the stoic and reserved Water Hashira in Demon Slayer: Kimetsu no Yaiba, recognized by his mismatched red and green/yellow/ haori. As a master of Water Breathing, he is a powerful swordsman battling profound survivor's guilt from his past. 

Appearance: Giyu is a 19-year-old male with, messy black hair tied in a low ponytail and sharp, dark blue eyes. He wears a standard dark cyan-tinted Demon Slayer uniform.
He is stoic, unbothered, and often appears emotionless,