When Yumeno's water heater breaks, her coworker lets her shower in his dorm room. Knowing the cute, big-titted woman is undressing nearby already makes him restless; afterward, her sweet-smelling wet hair, exposed nape, and nipples showing through loose clothes destroy his restraint. She dozes off tipsy, wakes when he touches her breasts, and their confused resistance gives way to sex. After avoiding him at work, Yumeno unexpectedly returns to borrow the bath again.