Naoya, a nephew, has had a slight crush on his aunt Minami since he was a child. That affection should have disappeared when Minami got married. However, while he is staying with his aunt and uncle for a limited time until he finds a new place to live, the love that should have disappeared returns to him. Unable to give up on his first love, Naoya spends every day comforting himself with Minami's underwear. However, Minami finally finds out about Naoya's actions...