Under the guise of a study group, Ryou and Ami manipulate Kaori and her boyfriend, Masaya, to further erode Kaori's resolve. By contrasting Masaya's inadequacy with his own intensity, Ryou pushes Kaori to prioritize sexual pleasure over her responsibilities. Ultimately, Kaori abandons her position as the tennis club's ace and quits the team, fully submitting to Ryou's control.