Natsuki Ueda

Tomoharu's younger brother (by 10 years). Because Tomoharu has never had any qualms about interacting with delinquents and gangsters, Natsuki has worried about his big brother ever since he was little. Despite Natsuki always wanting to take care of Tomoharu and Tomoharu wanting to be a good big brother, Natsuki didn't feel they were very close until Tomoharu met Aki and changed. Natsuki often fights with his parents about school, his parents thinking it's the most important thing and Natsuki hating to be told that. Natsuki also hates being treated like a kid and he can be quite precocious at times. His parents are against him dating, saying he's too young and that he should be focusing on school. He ends up befriending Aki, who becomes his counselor on girl-related issues.