Girlfriend goes on a trip and he fucks her big-breasted best friend. (PPPD-872)

My girlfriend's busty best friend seduced me into an affair! My live-in girlfriend went on a family trip, leaving me feeling lonely. But before she left, she invited her drinking buddy Sachiko over, and I took advantage of her while she was drunk to get intimate with her. After she went on her trip, we spent our days living together, having sex every day...