Reo, his mother’s voluptuous best friend, comes to stay for several days, and Yuichi is instantly captivated by her thick body and enormous breasts bouncing with every step. His fantasies drive him toward the bathroom for a peek, but a pair of freshly removed panties in the changing room distracts him. Reo catches him obsessively sniffing them after her bath, leaving him cornered—until she presses her breasts against him instead.