I had been drinking for the first time in a while at the new employee welcome party, and before I knew it, I had missed the last train. Then, Tsukino-san, a new employee, called out to me, "Senpai...would you like to stay at my house?" I have a girlfriend, and I was just planning to kill time until the first train... I lost my reason when I saw her breasts in her loungewear! Even though she called me on video, she gave me a titjob in a place where she wasn't visible! The guilt made my dick even harder! I squeezed her big breasts and had sex with her, cumming inside her many times!