My sister rented me to her friend who doesn't have a brother as a pseudo-brother! We took baths together, slept in the same futon together... My role is to fulfill all the things my friend would want to do if she had a brother. But we're both adults... I react in the bath and when we sleep together and get super hard! But my friend seems to love that kind of hardness, and we crossed the line and it looks like we're going to be overdue for what was supposed to be just a two-night stay!! Honestly, she's 100 times better than my real sister! She's kind and erotic...