Smitten at first sight with Yumi, the mother of his part-time coworker Ryota, Hashimoto devises a plan to win her by manipulating her son. Gradually deepening his connection with the Anno family, he targets Yumi's emotional vulnerabilities to draw closer. One day, his chance arrives—after a lonely phone call with her overworked husband, Yumi begins masturbating, lost in quiet longing. Hashimoto watches intently, savoring the scene. Seizing the moment, he later returns to the Anno residence when he knows Yumi will be alone.