Jouro, also known as Amatsuyu Kisaragi, is often seen as a helpful and kind person, but he doesn't stand out much. His best friend, Sun-chan, is extremely outgoing and popular as the captain of the baseball team, attracting many girls. Despite initially appearing ordinary, Jouro is actually manipulative and aims to make his childhood friend and the student council president fall for him, in what he calls his "perfect harem plan." However, things take an unexpected turn when both girls reveal that they have feelings for Sun-chan and ask Jouro for help in pursuing him. Adding to his confusion, Jouro discovers that a shy girl named Sumireko Sanshokuin has a crush on him, but she has an unpleasant personality and tries to interfere with his plans.
