At the welcome party for new employees, I hadn't had alcohol in a long time and drank too much, only to realize I missed the last train. Then, the new graduate employee, Tsukino-san, approached me and said, 'Senior... would you like to stay at my place if it's okay?' I have a girlfriend and I just intended to wait until the first train, but... the glimpse of her in her loungewear shattered my reason! She called me on video chat, and while I wasn't visible, she was doing paizuri! The guilt made my dick even harder! I squeezed her big breasts and had sex over and over, cumming inside her many times!