Lao is stoic and intimidating, often seen with a scowl on his face and ignoring challengers who approach him, as such with Fujio Hanaoka from Oya High. He lives in an orphanage and was abandoned by his parents and grew up in the orphanage, besides his cold nature he has a protective nature, and he really hates violence against children, and he is very protective of the children in the orphanage.