My Girlfriend's Older Sister Is A Little Devil Who Will Creep Up From Behind And Whisper Dirty Talk Into My Ear While Tweaking My Nipples And Driving Me Crazy, While My Girlfriend Is Right There Beside Me Miru (2021)

Sinopsis

S1's proud slut genius miru and up-and-coming genius masochist director Samoari are finally collaborating! One day, my girlfriend's sister's boyfriend came to the house and he was extremely confident, but he wasn't cool at all! In order to see if he is a man worthy of her sister, I play with her nipples and seduce her, and she reacts with excitement! Whisper dirty words in my ear and my cock will turn on! It's disgusting to ejaculate when your girlfriend is nearby! But I might feel like bullying her a bit...lol.