Mizukami Nao

Nao moved from the city for medical treatment. He has narcolepsy, a type of sleep disorder. Although his symptoms are suppressed as much as possible, his seizures often cause him to fall asleep outside.

He's somewhat spontaneous but doesn't pursue things too deeply. While valuing common sense, he sometimes surprises those around him with his reckless actions.

He feels sorry for his little brother, who he feels he's been troubling for a long time.