Takeshi Kuroki

Upperclassman of Kazuya who initially scouts him out, and finds his pitching incredible enough to recommend that he starts as Meisei's ace in his own place the following year. Afterwards, he moves to third base. He and his girlfriend Sachiko, who also happens to be the team manager, see talent in Tatsuya as well as Kazuya, and constantly try to get him to try out for the team.

(Source: Wikipedia)