・Mizuki…My sister’s friend (who has met me several times), always smiling and kind ・Me (main character)…College student living with my sister (19 years old) My sister’s friend Mizuki lives with me I came to play in the room where Me and Mizuki waiting for my sister to return. While we were waiting, we had nothing to do, so we drank together. When I was thinking, "Sister, I wonder if she'll be home soon," my sister called Mizuki-san and said, "I'm going to be home late today." The way Mizuki-san looks at me changes into the way she looks at prey... "(Are you) an amateur virgin? "(Your sister) said, 'I don't have a girlfriend right now, so you can do whatever you want.'" "Should I attack you?" ? ] I was invited by Mr. Tomizuki. Mizuki-san, who seems to be really having fun having sex, is on the verge of exploding with a vacuum fellatio, and vaginal cum shot is made at the rhythmical cowgirl position! ! [Thanks to KMP 20th anniversary! ! ]