I attend a university in Tokyo and return to my hometown during long vacations. At some point, I started an affair with my sister-in-law, Yuka, only during these visits home. Initially, it was just kissing, but each time I returned home, our relationship intensified. Even when we couldn't meet, I would remember those kisses, my heart pounding, and each time I returned home, we would reunite lips and hearts… We would steal away from the family's gaze and passionately take each other. One day, upon returning home, my brother told me that Yuka was pregnant...
