HUNTA-136 I share a room with my little sister, a slutty high school student, in a small house. She brings her friend (who's also a slut, naturally), and they're talking about slutty things that are pretty extreme for me, a high school student. Even though I don't want to listen, I can't help but overhear them, and my heart is beating fast. My sister's friend, who's been watching me behaving suspiciously, takes advantage of the opportunity when my sister isn't around...

Because our house is too small, I still share a room with my younger sister. My sister goes to a school for sluts, so naturally, all her friends are sluts! So, whenever her friends come over, they start talking about how they're sluts, which is too much for me, a high school student! This slut teased me and said, "You can go up to B!" So I licked her nipples enthusiastically, and my sister's friend, who had never experienced proper foreplay, came multiple times. But that wasn't enough and she asked for a passionate kiss, and then...