"Want to have sex with beautiful women at a hot spring?" Driven by this desire, the manager of a long-established hot spring inn devised a bold event called "Mud■■ Operation!!" When young female guests arrive seeking relaxation, the inn offers them a complimentary "moon-viewing sake" service. Delighted by the perk of drinking alcohol while soaking in the hot spring, the women exclaim, "Being able to drink while enjoying the bath is absolutely perfect!" As they drink, they naturally relax, lose their inhibitions, and gradually become less resistant to conversation... Just as planned, they soon passed out! Now they're completely at our mercy—we did whatever we wanted!! (Hassle Mania) *Facial exposure in main feature*