When she was in middle school, Nanoka fell in love with Tanukida-senpai, a super popular Koshien baseball player who is rumored to be a "once-in-a-century genius." In order to fulfill her dream of "being the closest person to support him (and possibly even dating him)," she enrolled in the same high school as him and became the manager of the baseball team! But Tanukida-senpai has a shocking secret...!?