It had been about a week since I last had sex. On my way home after drinking with friends, I made plans with someone to get a ride back to my place. When we arrived, he said he wasn't done drinking yet and invited me to keep going. I hesitated at first, but since he was pretty good-looking, I impulsively agreed. Soon, the conversation turned to lingerie, and he mentioned he was a total sadist. Since I'm a masochist, I started getting turned on and thought I'd like to have sex with him. He said he loved tying people up, so on a whim, I said, "Really? I'd kind of like to be tied up," and he immediately replied, "Sure, no problem." But we didn't have any proper rope at home, so we ended up going all the way to FamilyMart to buy some (lol). As expected, the only thing available was Suzuran tape used for bundling newspapers, so we grabbed that and some dessert and happily headed back home (lol). I was quickly tied up, my hands bound behind my back, completely immobilized. Then my senpai got turned on and we started right away. It was my first time being properly restrained, and I got really excited. Since then, I haven't been able to stop feeling aroused—I've been craving more intense play, wanting to be dominated, taken more forcefully, and degraded with dirty talk. That's exactly what I asked for today, and honestly, I got so wet it was crazy. The squelching sounds during cowgirl position echoed everywhere, and it was incredibly embarrassing.