​Living with his childhood girlfriend, Narasawa Yui, and her mother due to family circumstances, Kondou Makoto navigates a complex web of relationships. While Yui harbors obvious desires for her beloved “onii-chan,” Makoto remains oblivious, focusing instead on the numerous girls who cross his path. With his willingness to provide help, comfort, and fulfilling intimate encounters, Makoto leaves a lasting impression on these girls. However, his attention is soon captured by a girl named Izumi, causing a shift in his affections. As the story unfolds, questions arise about Yui’s unrequited crush on Makoto. Will she find solace in the arms of Aritomo, the wealthy snob? And will Yoshiki, the perverted photographer, capture incriminating photos of every female at their school?​