Minami, my proud girlfriend, is called "cute" by everyone around me. She doesn't let me have sex much, so I had no choice but to jerk off to a popular sex stream on the internet, and what appeared on the screen was... my girlfriend, completely different from usual. She was having sex with a man I didn't know, something I'd never seen before... and she was quite proactive. She usually hates giving blowjobs, and when I tried to use adult toys, she refused. I saw her enthusiastically doing things she's never done before with her cheating partner in real time...