Kenji reunites with his son's ex-girlfriend, "Ai", after several years. Ai still retains her childlike innocence, but her body has grown into that of an adult woman. Kenji tries to protect her from sexual harassment. Kenji had once accidentally witnessed the intense and awkward sex between two young people at his home. "You deliberately made me hear those lewd sounds..." In the past, Kenji was subjected to oral sex by a young girl at her whim. Now, Ai presses him again, saying, "I wanted to see you," and Kenji cannot refuse…【Featured Novel】 Adapted from the original novel "Son's Lover" by Miki Fushimi.
