Ace wo Nerae! Final Stage
Japanese title: 「エースをねらえ！」 —ファイナル・ステージ—
Type: OVA
Episodes: 12
Source: Manga
Genres: Drama, Sports
Studios: Tokyo Movie Shinsha
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older

Hiromi continues developing her tennis and shows the results while undergoing an emotional change into an adult.

(Source: AniDB)