I don't usually attend company social gatherings, but when my junior colleague Mami invited me, I reluctantly went. We had so much fun that I missed the last train, so I had no choice but to check into a hotel with Mami. Mami is usually a serious and good worker, but when she drinks, she gets excited and starts kissing everywhere. At first, I tried to hold back and take care of her, but I couldn't resist the temptation of her cute lips and we ended up having sex until the morning.