As a substitute parent, Nene, the older sister, takes care of her younger brother. In the apartment building where this sibling duo lives, a note was found in the landlord's residence that read, "301 Sakura's pussy for rent." When the landlord visited the room, Nene was found asleep with her hands restrained. "It's okay. In return, the rent..." her brother whispered, and the landlord attacked Nene, having sex with her without protection. However, the "rental destination" is not limited to this.