MKON-025 I'm really sorry... I was forced by a classmate to promise that she could grope my boobs. Sachiko

I made a promise with my friend to let him grope my sister's breasts. When I told her about it, she said '...It's fine.' Honestly, I thought she would refuse, and I was shocked that my sister didn't have much of a sense of chastity. After all, you can't just let strangers grope your breasts! She never seemed to have a boyfriend before, but maybe she's actually a slut. Anyway, the guys from my class came over to my house. My sister is about to get her breasts groped...