Powerful Pro Yakyuu: Powerful Koukou-hen
Genres: Sports
Type: ONA, Episodes: 4
Aired: Mar 20, 2021 to Apr 4, 2021
Studio: CloverWorks
Source: Game
Rating: G - All Ages
Synopsis:
The story will center around a protagonist who goes to Powerful High School to achieve his dreams of being a baseball player. There, he reunites with a childhood friend named Subaru Hoshii, who he promised to play at the Summer Koshien high school championship game with in the past, but who seems to have forgotten their promise.

(Source: ANN)