My brother's wife Chika (30), who works as a dental assistant, has an estimated F-cup bust, and now that her marriage is falling apart, it's the perfect chance to finally have sex with her! Faking illness, I visit her clinic and am blown away by her in uniform. Pretending to be in pain, I grab her hand, and when we're alone, I boldly grope her breasts. But I soon discover Chika is having an affair with the clinic's director! Devastated yet determined, I use this secret to get even closer. In truth, Chika is sexually frustrated—though she pretends to resist, she starts grinding against me, climaxing wildly as her huge tits and big ass shake with pleasure in an unexpected twist!