Powerful Pro Yakyuu: Powerful Koukou-hen
Japanese title: パワフルプロ野球 パワフル高校編
Alternative titles: Powerful Pro Baseball: Powerful Highschool Arc
Type: ONA
Source: Game
Episodes: 4
Status: Finished Airing
Aired: Mar 20, 2021 to Apr 4, 2021
Duration: 14 min per ep
Rating: G - All Ages
Studios: CloverWorks
Producers: Konami Digital Entertainment
Genres: Sports
Themes: Team Sports

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)

Short web adaptation for Jikkyou Powerful Pro Yakyuu smartphone game.