Seiya es un muchacho poco sociable que odia a Ritsuka, una compañera de su clase que siempre se acerca con una sonrisa que él considera poco sincera. Un día, Ritsuka le confiesa que está enamorada de él...

When Nanoka was in middle school, she got her first confession. Feeling that the boy really liked her, she started dating him. Only to find out later that he only used her to show off in front of his friends...