Due to a personnel change, I was assigned to a local sales office. Since the matter was sudden, I had to temporarily live with a relative who lived near my place of work, where I was reunited with my girlfriend's cousin Reo, who I used to play with when I was little, for the first time in a while. Reo, who returned to her parents' house after her divorce, has become an attractive adult woman with a plump body. That night, Reo came to me as I couldn't sleep.