Koji was in love with Nanaho, the mother of his friend. He visited his friend's house every day, stealing glances at her, captivated by her beauty. His desire for Nanaho grew stronger each day. But she was off-limits—just his friend's mother—and he knew their love could never be. Consumed by these feelings, Koji resorted to stealing her underwear. One night, he sneaked into her bedroom and opened the drawer where she kept her lingerie. As he reached inside, he pulled out something unexpected—an adult toy. In that moment, something deep inside him began to change.