I am seduced by my girlfriend's big breasted female friend who I would never let go of and have sex with her! My girlfriend, who I live with, was going on a family trip for about a week, and I was supposed to be alone for the first time in a while. However, before her departure, she suddenly gets close to her best friend, Minami, who came to a drinking party and Suki, who got drunk and slept with her. And after she went on her trip, she came back with Minami who came to visit again.