Riho Shishido begins the morning smiling, unaware that a nonstop 12-hour sensitivity-training shoot awaits her. Fingers and toys work over her G-spot before cocks stimulate deep near her cervix, driving her sensitivity higher with every round. She arches and convulses through orgasm after orgasm, her G-cup tits bouncing violently, while her pussy is trained without rest and filled with 15 creampies in the most exhaustive sex documentary of her career.