When my cousin, who I used to play with when I was a child, came to visit me in the countryside for the first time in 5 years, her breasts had grown rapidly, so I spent a week during summer vacation drenched in sweat and creampied her.

My cousin Rin, who moved to Tokyo five years ago due to her parents' work, ends up staying at her relative Yuzuru's house for one week this summer. Yuzuru is like an older brother, two years older than Rin. Rin and I have often played together since we were little, such as catching bugs. Yuzuru's parents were also away due to part-time work, so they reunited for the first time in a while, but Rin, who thought she was still a child, noticed that her face had become cuter and her breasts had grown to an unbelievable size. Yuzuru, who used to masturbate, sees Rin naked in the bath and can't control his erection.