Under the scorching summer sun, Rin and her childhood friend went to a festival. Suddenly caught in a torrential downpour, they took refuge inside a car. In the confined space, her see-through bra and rainwater dripping between her breasts caused her childhood friend's crotch to swell. The two, who had never seen each other as the opposite sex before, lost their rationality, forgot about their respective lovers, and gave in to each other's desires right there in the car. An NTR story that started with sudden rain.
