Will she be forced to participate in the "SEX Study Group" held by slut girls who just want to eat virgins? After going to university, I decided to live with my sister who lives in the city. Then, my sister gathers friends and makes a big fuss on the weekend! All I hear is erotic! All of them are sluts! ? When I was forced to participate in that circle, I was instantly found out I was a virgin...Even though I had no choice, I ended up losing my virginity under the guise of a "SEX Study Group"! ! My sisters are planning on having fun, but for me it's an irreplaceable first experience! However, the slut couldn't stop the thrust because it felt so good, and the slut kept cumming!

My younger brother goes to a university in the city and ends up living with his older sister who has moved to Tokyo. However, her sister is an incredible slut, and on weekends she makes a big fuss with her slutty female friends over erotic talk! When his younger brother is found to be a virgin, dragged into the circle... he begins his first attempt at a sex study group! I don't want to be taken away from my irreplaceable first experience like this! However, the pleasure of my first sex makes me unable to stop the thrust! In the end, all the sluts ask for a dick and ejaculates all night!