Idol A (Japanese: アイドルA(エース), Hepburn: Aidoru Eisu) is a Japanese manga written by Mitsuru Adachi about a high school girl who has a successful career as an idol and who wishes to play on the high school baseball team, but cannot due to the rules.

Her father is the team's coach, and her best friend happens to look very much like her, so she is able to do a swap with him during games and meet her dream.

The first 3 chapters were published irregularly in Weekly Young Sunday between 2005 and 2007 [1][2][3] and collected in Short Program 3 tankōbon.

Sources:[1][2][3] In summer 2005 a 2.5 minutes long original promotional video animated by studio OLM was produced by Shogakukan for the then-upcoming release of the Idol Ace manga in the Weekly Young Sunday magazine.

The short features Azusa being recorded throughout the day by a peeping pervert.