Giichi Tomioka is the descendant of Giyu Tomioka. He is a student at the same swimming school as his two best friends, the reincarnations of Sabito and Makomo. Giichi bears a great resemblance to his ancestor, Giyu. He also has a pale complexion and unruly black hair of uneven lengths that sticks up in tufts around his head. His eyes are sharp and moderately large, their irises a deep sapphire that fades to a lighter blue and their pupils a bluish-black, and are framed by thin eyebrows. He wears a blue sweater, a black jogging pants with a red stripe and a black backpack. Unlike his ancestor Giyu's reserved personality, Giichi seems to be cheerful and happy, especially with his best friends. He also appears to be a generous person, offering his toy charm to his friend when he sees how happy it would make her.