Yumi, the caretaker of a men's dormitory, selflessly takes care of the boarders. However, the boarders are after Yumi's large breasts and butt! In the morning, they show off their erect penises and make her give head, and at night, they sneak into her room while she sleeps to have sex! They even go as far as having an orgy with Yumi in just an apron! The chaotic dormitory filled with lust echoes with Yumi's moans of pleasure...
