I'm currently staying at my sister's apartment in Tokyo for my exams, and she often invites friends over, but they're all well-endowed! Moreover, they frequently stay overnight, and when we sleep three in a row, every time a friend turns over, their large breasts get super close! Unconsciously, my big penis gets erect! Then, seeing that, a friend gets all worked up and comes to have night fun with me! They wake me up with pleasure after already finishing inside me! To avoid getting caught by my sister, I end up having multiple rounds of sex with my friend, all culminating in internal releases!
