Our main character, Nagato Shinobu, was confessed to by Ayame, Kanna, and Yuri, each of them having sex with him after they did so. He tried to choose just one of them before the school festival. Thinking about which one to choose, he ends up reuniting with his childhood friend who used to be his next door neighbor, Torii Ui. Her family has moved back to the same area, but her parents were unable to come back at the same time as her. Because of that, its suggested that she live with Shinobu for a while. Having a crush on Shinobu all these years, she confesses and has sex with him as well. And with that, our main characters youth and real eroge situation begins again!