Finally a collaboration between miru, the genius of lewd women that S1 is proud of, and Samori, the rising genius M male director! One day, when my sister's boyfriend comes to the house, he's incredibly confident but not cool at all! When I try to tempt him by playing with his nipples to see if he's a match for my sister, he reacts with a twitch and a super reaction! When I whisper lewd words in his ear, his dick gets hard as a rock! It's the worst to cum when she has a boyfriend nearby! But I might want to tease him a little... lol.