Nao Jinguji and her husband went on a hot spring vacation with their best friend's couple from college, a trip of only 1 day and 2 nights. The group of four were very happy because it had been a long time since they had gathered together happily like that, but this trip clearly had another purpose for Nao that her husband did not know. Nao and her best friend's husband were once lovers. The two broke up, but Nao still had feelings for her. Nao always felt regretful about that love. After eating and drinking, in the middle of the night Nao heard her best friend's moans of pleasure. Nao felt horny and uncomfortable so she decided to take a shower, and after making love, her friend's husband Nao's body (nyc) was about to go there to take a bath when she saw Nao naked…