Her younger sister is prettier than her, and she loves me with huge breasts, so she always seduces me with her braless boobs.When she's away, Shion always makes a grinning sex appeal and asks, "Do you want to have sex?"I was at the mercy of such a girlfriend's sister, and finally I was the worst person who ended up being able to erect a dick only with a big boob... "It's a secret to my sister" I lost to the temptation of my little devil sister's boobs and I couldn't stand it when she was there and had public cheating sex!