In an ordinary high school, the innocent love stories of boys and girls never stop. First-year high school girl Kinoshita Ninako (played by Arimura Kasumi) secretly likes Ichinose Ren (played by Fukushi Sota), who is in the same grade. Although Ichinose is the object of most girls' affection, he is as cold as a glacier and rejects the girls who dare to confess. However, the god of luck inadvertently favors Ninako. An accidental conversation on the train eliminates the barriers between her and Ichinose. She follows the other's footsteps in a clumsy way, shouting and complaining for the other from the bottom of her heart, and Ichinose seems to be fond of this somewhat special girl. But the love of youth is not so simple. The appearance of Naga Daiki (played by Irie Jingi), Nagama Yuka (played by Sato Arisa), Ando Takumi (played by Yamada Yuki), Sugimoto Mao (played by Kuroshima Yuina) and others makes the first love story complicated... This film is based on the Sakisaka Io girl manga.