A young woman working at a pachinko parlor is constantly harassed by older male customers who grope her buttocks, leaving her distressed. Although she has a boyfriend, their sex life is too vanilla, leaving her craving excitement—so she gladly agreed to be filmed. Eager and in high spirits, she exclaims, "Today I'm breaking my orgasm record!" and enthusiastically dives in. When played with toys, she climaxes two to three times. During handjob scenes, she squirts so much that the sofa becomes soaked. When penetrated by a cock other than her boyfriend's, she feels a twinge of guilt—but still takes the shaft in her own hand and guides it inside, reaching orgasm repeatedly.