SKMJ-770 Real sibling-style street pickup challenge! Incest-themed rock-paper-scissors with a prize of 1 million yen if you don’t get excited by your sister’s nude body! But if you do get turned on… a forbidden penalty game!! A beautiful older sister special where a virgin younger brother gets his first experience in a live setting!

We approached a passing brother and sister for a real challenge! Would you like to try a game of rock-paper-scissors for a 1 million yen prize? The inexperienced younger brother insists, I could never get excited by my sister’s body. But he can’t hide his reaction to his sister’s revealing outfit. The penalty game is a first-time experience arranged by the older sister! The two of them grow increasingly excited by the forbidden situation. They go all the way to a final climax!