|Affiliation|| The Sunflower House|
Nao has short grey hair and possibly black eyes. He is a tall boy for his age.
Nao is actually a shy person despite his appearance and personality. At first, he appears to be uncaring towards Shiharu but actually he just doesn't know how to express his feelings. He is often cold towards people, and he gets very jealous when he sees Shiharu with other men (especially Seiji). He can be childish and mean, but he is really just shy and insecure.
His mother abandoned him in a park when he was about 7 years old. At the time, Nao already knew that his mom was going to abandon him since he had never felt any love from her to start with. Thus, this made him untrusting towards people, especially adults.