Yuna ended up tutoring Shinya, the son of an acquaintance, for his entrance exams, but Shinya finds himself too distracted by Yuna to focus on studying. Noticing his feelings, she decides to use her body to give him a special kind of lesson, saying, "If this helps you concentrate on your studies..." As their intimate relationship deepens, Shinya gradually regains his motivation to study, strengthening the bond between them even further.