The main character Mizuki Suzumori has been in love with her neighbor's boyfriend Sota Kazami since childhood. The romantic relationship develops rapidly and the couple contemplates the future. They make a promise to each other that they will definitely enter the same university. Mizuki is forced to stay at a training camp during the summer break in order to get a recommendation for university admission... Some time later, Kazami receives a DVD in the mail labeled "for Kazami" from an unknown sender. The hero turns on the disc and sees his beloved in the hands of some perverted scumbag: - "Hi Sota! Can you see me? It's been a long time since we've spoken... This is my teacher, Iijima-san. It all started on my first day of camp. He drugged me and then raped me... That aphrodisiac made me cum all night long and it was my first time... Are you listening? It didn't end there, he threatened me with the distribution of pictures and videos that he recorded and filmed while he fucked me every day for a month... But most importantly, he promised to give me a reference for university admission. We promised each other... You remember Sota, don't you?"