PARATHD-04258 My Friend’s Younger Sister Is Super Cute and So Full of Openings That It Feels Like Something Could Happen (6)

I have a girl I’ve been interested in. She’s incredibly cute, a bit tsundere, and the kind of girl who carelessly gives little glimpses of her underwear and chest. Her name is Rina-chan. But there’s one problem: Rina-chan is my friend’s younger sister.

At first, I held back out of consideration for my friend, but I can’t stand it anymore. After getting drunk, I invite the defenseless and affectionate Rina-chan into a physical relationship. And that’s not enough for me—I go even further, doing all sorts of things right in front of my sleeping friend.