My sister, who came to Tokyo for job hunting, asked to stay for a week. Seeing me enjoying a drink after a bath, she said, "What about mine? I'm old enough to drink now!" acting all superior. But she got totally wasted after just a little bit! After making fun of my virginity, she mistook me for her boyfriend the next moment and started begging for sex! I couldn't help but cum inside her pussy, knocking her out instantly! The next day, my sister had no memory of it, despite being embarrassed by me. Well, then... it's okay to have sex with her every day, right?
