Studies Without Succumbing to Sexual Desires in Chastity Belt, Young Sister’s Tits, Butt, Pussy Shown off and Rub Tease Class

Older brother-in-law failed university entrance exams four years in a row and still studying today. Younger sister-in-law says, “Since you fap and spit out what you’ve studied along with semen, I’ll help you study by controlling your ejaculation,” and puts chastity belt on him and keeps key. She says, “I’ll help you so you don’t succumb to your sexual desires,” and teases him, rubbing tits, butt, and pussy against his head and body while he studies. She sits desk and shows him thighs, panties, and tits, grinning, and finally shows him pussy and teases him. He tries to concentrate on studies, but he gets distracted by her tits, butt, thighs, and pussy and gets answers wrong, so she slaps him and laughs as punishment. She takes off panties and puts them over his face, saying, “You just keep studying like that and don’t give in to your sexual desires from the smell of my panties. I have the key to your chastity belt, so you can’t even masturbate, hahaha.” Then she leaves.