Since moving to Tokyo, Shinichi’s been too busy studying to visit his grandparents. This summer, he returns to the countryside. Upon arriving, he meets Yume, his childhood neighbor friend, now stunningly mature. She works for an insurance company and stays local due to her dad’s health. Yume still visits his grandparents often. That night, they all dine together, and Shinichi shares he has a girlfriend, delighting his grandparents. The next day, Yume’s manager visits to sign a contract, and Shinichi overhears Yume’s affair with him, though she wants to end it. Knowing Shinichi peeks at her body, Yume lets him enjoy her freely. They fuck relentlessly during his stay. When it’s time to leave, Yume recalls begging him to return years ago. But Shinichi, now changed, seems oblivious to her lingering feelings.