I have a childhood friend who's also my classmate, but we barely talked lately. She ended up staying at my place because our parents went on a trip. She was supposed to house-sit, and though she seemed surprisingly quiet at first, she turned out to be an incredibly aggressive girl. Claiming we'd sleep together platonically, she snuck into my futon at night, showed me her masturbating at school, and kept going even after she caught me cumming. For five days straight, I helplessly endured her relentless attacks.