Triggered by their time together in the bathroom, Riko begins washing Rina's body, gradually deepening their physical intimacy. Finding themselves in the strange situation of seeing each other's genitals for the first time, they grow increasingly flustered. However, when Riko suggests, "I'll kiss it to make it better, so it won't hurt," their relationship takes a new turn. What began as innocent friendship slowly transforms into love, intensifying their mutual desire. This film captures the deepening emotional and physical bond between the two girls.