Classmates Rin, Maria and Walnut. The daily school life is depicted from the perspective of each of the three girls. Hajime is a childhood friend who likes Lin. Walnut has feelings for him and uses her body to seduce him. Lin actually likes Hajime, but her homeroom teacher Kozuka has a hold on her weakness and is playing with her. Maria is a serious class representative and an honor student who secretly has feelings for Lin. She is also Kozuka's good pet. A real-time school drama in which the feelings of each of the three girls intertwine.