Overview:

In Chinatsu’s Summer Vacation, Step in to the shoes of Chinatsu’s older brother who is always staring at her with perverted eyes In Chinatsu’s Summer Vacation.
Thus, Chinatsu has come up with a great idea!
Chinatsu challenges you to a game of beach volleyball.
The loser has to do whatever the winner wants for an entire day.
She notices the bulge in your pants and knows that your body is being honest.
When she wins, she demands a first kiss.
“So this is your…”
It’s warm, and big. Ehehe.
“To get horny because of your little sister… Onii-chan, you sure are a perv…”