A first-person movie, you play as a young man of high school age, one day you are taken home by your lover to play and introduced to her biological sister Aoi. Quite surprised by the beautiful beauty and charm of your lover's sister, but even more surprising is that you are constantly seduced and erotic by her, she constantly shows off her body in front of you as if she wants to tell you "Do you want to fuck me?", How could he put up with such a beautiful girl?