Private lesson: Kateikyoshi no munamoto

Original title: プライベート・レッスン 家庭教師の胸元

Kaoru, a private tutor, arrived at the home of Ai, a high school dropout studying for the university entrance qualification exam. The two quickly became close, like sisters. Kaoru had a boyfriend named Fukao, but on the day of a long-awaited date, she discovered he was cheating on her...