Koi ni Oboreru Houkago

A teacher becomes emotionally entangled with a student who moves in nearby, as thin walls allow him to overhear the student's private nighttime activities. The situation intensifies when the teacher discovers a bag of sex toys in the student's apartment, causing tension as he questions their use. In another storyline, a teacher injures his student while drunk and must avoid physical contact. A high school student, Setsu, is raised by his cold uncle, Ryouichi, yet remains emotionally attached. Separately, Kazuki runs a convenience store and frequently asks his step-brother Ryouta to pose as his boyfriend to attract female customers, though Ryouta demands payment. Ryouta's frequent requests for attention raise concerns when a male customer shows interest in Kazuki. After breaking both an arm and a leg, Ryouta becomes demanding and reliant on Kazuki's care. Kazuki also plans a special birthday surprise for Ryouta, hinting at deeper significance.