Kotoko Aihara’s school sorts people into classes by academic ability. She’s in the lowest category, Class F. While she doesn’t care much about academics, she has the misfortune of falling in love with a boy from the academically gifted Class A. Naoki Irie is a genius with a photographic memory and an acidic personality. When Kotoko tries to give Naoki a letter that confesses her feelings he refuses to read it! He comments that he doesn’t like “stupid women,” ensuring that Kotoko has the sympathy of her entire class.