Precious Only

Hiro has been in a relationship with his aunt Saya since the previous summer, but their time together is limited to holidays when his family visits his grandmother. As a result, they make the most of the short time they have. Jun is in a shower room after helping his junior in the track and field club, Aki, train for the long jump, when Aki approaches him, partially covered by a small towel, claiming there is no hot water in the girls' shower room. Aya's husband has been rejecting her advances due to being busy, causing her to feel sexually frustrated; fortunately, her husband's younger brother, Toshiaki, is living with them, and his affection towards Aya becomes apparent soon. Jun has raped his younger sister Yumi, and though he is prepared to face the consequences, an awkward atmosphere now exists between them.