UMD-1003 Accidental Insertion During Thigh Job Practice With Little Sister! 12 Karin Kitaoka

Karin is a caring little sister. Both of her brothers have girlfriends and get along well with them, but they suffer from a unique problem: they don't know how to have sex properly. Brother (1) has a girlfriend but struggles with the act, often failing to actually insert his cock. Brother (2) just got his first girlfriend and is a virgin who doesn't even know how to interact with girls. Seeing her brothers' struggles, the kind sister provides erotic guidance. They practiced using thigh jobs to avoid the awkwardness of sibling sex, but as Karin became more aroused, she accidentally let them insert. To her surprise, the brothers were actually quite good at it! After various reasons for sticking to thigh jobs, they eventually couldn't hold back and went for the full insertion!

Actresses

Karin Kitaoka

Maker: LEO

Team: 素股プレイでハプニング！！妹とセックスの練習中に間違ってヌルンと挿入！！

Product Number: UMD-1003

Product Number(DMM): 125umd01003

Published: Apr 30, 2026