What if her little sister, who has big L-cup tits, is head over heels for you and begs you for sex? Can you hold back? The first time I went to her house, 'Yu' had already set her sights on me. "It's a secret from my sister," she said, knowing her big tits were her weapon. She rubbed against me without a bra, trying to break my dick and my resolve. Even though I knew it was wrong, and my girlfriend was right next door, I came over and over again from her dripping tits. I'm such a piece of shit.