At the end of the year, I returned to my parents' home in Niigata. There, I met my cousin Tsubasa unnie for the first time in 10 years. The sweet and sour memories of those days are revived after a long reunion. She is my first love partner and her first kiss partner. "Hajime-chan ... I've become a married woman." But she has a husband ... And I have a wife ... Even if they are in love for the first time, they are married to each other. You should never make a mistake. I would spend the night under the same roof for three days while I was returning home with her.