Ryosuke is a ronin after failing his university entrance exams. Worried about Ryosuke, his father decides to have Maki, the wife of an acquaintance of his and an excellent tutor, watch Ryosuke study. Ryosuke wants to pass the exam next year, but he is worried about Maki's sexy chest. She noticed it and Maki led her Ryosuke to pass her university by giving her H rewards every time she solved the problem.
