She's a female college classmate who's like one of the guys, someone I can just relax around. But while hanging out as usual, I caught a glimpse of her lingerie and body, and they were way more erotic than I ever imagined!? As I struggled to contain my arousal, she looked at me with a feminine expression she never shows... and before I knew it, we were fucking each other until morning! From that day on, she became more and more feminine, and I couldn't stop being excited. The two of us kept having sex, making our previous relationship feel like a lie!