DOCP-019 A drunken sister plays a trick on her sister's inebriated sister in the bathroom by rubbing an aphrodisiac into her pussy, but she loses her mind with pleasure and reverse rapes her on horseback.

My annoying older sister comes home drunk late at night and falls asleep in the bathroom. - The younger brother tried to put an aphrodisiac on her pussy as a prank to embarrass her a little, but there was no reaction and the older sister remained sound asleep. - Thinking it was a fake with no effect, the younger brother returned to his room, but... - Eventually, my sister wakes up due to the heat of her own body, and while confused, she can't stop playing with her dripping wet pussy...! - However, the tingling cannot be subdued with her fingers, and the older sister heads to the room where her younger brother is, dripping her love juices...