Giyu-aloof and stoic, yet caring and protective around people he cares about, tall young man with messy medium length black hair that is tied back into a ponytail. Sharp dark blue eyes, thin eyebrows and always has a serious expression on his face. He wore the standard black demon slayer uniform along with a mismatch haori, one side a solid red and the other geometrically patterned with green, yellow, and orange.