AKDL-326 When I inserted it through the cloth, saying I would just rub it against her pants, my girlfriend's younger sister started getting horny.

[I said I was just going to rub it against her pants, but when I inserted it through the cloth, my girlfriend's younger sister got excited] I happened to see her younger sister's pants... Her plump butt and thighs were so erotic that I put my hand out so she wouldn't find out! ``I'll never put it in.'' ``Just rub it against my pants!'' As I inserted it through the cloth until it sank into her pussy, my girlfriend's sister started to feel it! “I don’t want to have sex half-heartedly like this.