My stepsister, who was born from my parents' remarriage, is too erotic, and the house is too small to live in a bunk bed... And now that my brother has moved out, I'm living in a shared room with my stepsister! That alone was making me excited every day, but my stepsister's friends, who come to stay in the empty bed, are all busty! It's too erotic, and my dick is at its limit! Just climbing up and down the bed reveals panty flashes and chest flashes, and seeing that, I'm fully erect! At first, my stepsister's friends were teasing me, but when they saw my erection... They seriously went after my dick!