To win the heart of her upperclassman crush, Daiki Matsuzaki, who she has had a one-sided love for since childhood, Yuri Nanami enrolls in Asuka Gakuen. She planned to confess her feelings to Matsuzaki after starting school, but he was too focused on baseball and ignored her.

Determined to make Matsuzaki see her as a woman someday, Yuri spends much of her school life polishing her appearance and becomes the "Miss Contest Winner" and "Number One Girl Wanted to Date in School".

The following spring, Matsuzaki becomes a candidate for Asuka Gakuen's ace and trains hard for the summer tournament. However, he injures himself and can no longer practice pitching. Feeling guilty for letting his team down, Matsuzaki becomes depressed. Yuri wants to help him and is approaches a third-year manager named Satsuki Suzumori, who was known as the "legendary manager."
Satsuki tells her that she should become his personal manager and spoil him.

Yuri agrees and begins to spoil Matsuzaki, but due to her competitive nature and being unable to forget that Matsuzaki did not treat her like a woman last year, she has trouble being honest with him. Matsuzaki, on the other hand, feels excited and nervous about Yuri's sudden transformation into a more feminine person, but knows he needs to focus on his rehabilitation seriously.

As Yuri tries to spoil Matsuzaki while struggling to become more honest with him, Matsuzaki is torn between his desires and reason. The two youths are about to play ball!