Shishi mo Kobamazu

Yuzuru is a rough-looking delinquent who asks his senior, Satomi, to officially acknowledge him as a younger brother as a way to express his gratitude for helping his family during a financial crisis. After that, Yuzuru constantly follows Satomi around and takes care of him, always catering to his needs. However, Satomi becomes increasingly annoyed by Yuzuru's constant attention, while Yuzuru refuses to back down. The situation escalates when Satomi finally tells Yuzuru to stop by suggesting he sleep with him.