Tanukida-senpai no Seishun ni Naritai

When she was still in junior high school, Nahana fell in love with Tanukida, a star player at the Koshien tournament called “the talent of the century." She enrolls in the same high school and becomes a student manager for the baseball team, hoping to get close and cheer on her senpai, and maybe even go out with him, too. However, Tanukida has a secret of his own!?

(Source: Kodansha, translated)