Nanashi is a youthful teenager with half of his hair shaved off, with slightly short spiked black hair and green eyes. He wears a dark green jumpsuit with the right sleeves halved and half of his left leg exposed, one grayish green glove on his right hand, and grayish green boots with orange socks, with a red stud earring on one ear. In addition, he has a green scar on the right side of his face, and green markings on his left hand. Before making a contract with Dagda, he had brown eyes and no scar or markings on his left hand.