SSIS-169 Miru, my little devilish older sister who drives me crazy by whispering in my ear and teasing my nipples even though my girlfriend is next to me.

S1's proud slut genius miru and up-and-coming genius masochistic male director Samoari are finally collaborating! - One day, my sister's boyfriend came to my house and I noticed that he was very confident, but he wasn't cool at all! - To test whether he is a man worthy of my sister, I play with her nipples to seduce him, and he reacts with excitement! - Whispering dirty words in my ear makes me cum! - It's disgusting to ejaculate when your girlfriend is nearby! - But I might feel like bullying her a bit...lol.