Sueharu Maru falls for classmate, school idol, and award-winning novelist Shirokusa Kachi, and they develop a friendship. He is also childhood friends with the other school idol, Kuroha Shida, who had confessed to him recently but was turned down due to his feelings for Kachi. In class, he overhears that Kachi is in a relationship with Mitsuru Abe, causing him to fall into a depression. Shida arrives to cheer him up, and helps to convince him to get revenge on Kachi and Abe by starting a fake relationship with her in order to make Kachi jealous and upstage them; all the while Shida uses this opportunity to get closer to Maru and get him to eventually fall for her...