Komaki Manaka fantasizes about her classmate Kono Takaaki but struggles with shyness around boys. During a library encounter, Takaaki-kun proposes training sessions, leading to a bond where they address each other informally. However, an overheard conversation by Takaaki's friend Kosaka Yuji sparks rumors among classmates, altering the dynamics with other girls vying for Takaaki's attention.