Due to my mistake, I ended up sharing a room with a super serious female coworker on a business trip!? She's usually strict and was beyond pissed! To make matters worse, the AC was broken, turning the room into a steaming sauna!? Since we were both sweaty and couldn't sleep, we decided to have some drinks... but once she got tipsy, she unexpectedly flipped into a clingy, seductive mode!? With her yukata clinging to her sweaty body, her breasts and panties were in full view. When she noticed I had a hard-on, she started craving my cock... I always thought she was a stiff who had nothing to do with erotic things, but it turns out she was a super erotic slut. In the end, we fucked each other repeatedly, drenched in sweat, until morning! It was a two-day, one-night business trip with a very unexpected discovery.