パコマネ わたし、今日から名門野球部の性処理係になります…

Hakomine Academy is a prestigious high school known for its baseball team, which has won the national championships for many years now. First-year student, Inami Saki, sees one of their games and becomes interested in it, and succeeds in becoming the manager for the team.

Saki, excited about her new position, gets to know about the team's "tradition" from the chief manager of the team, Kurimiya Nozomi.
"It is the manager's job to take care of everything so the players can be in perfect condition--"