Quattro Battery

Ichita, a hard-to-hit fireballer, Yutaro, a kind but simple-minded catcher, Amamiya, a tall pitching prodigy, and Hinami, a cool, calm, and intelligent catcher. The fates of these four players intersect, each with their own ambitions! What combination of the four will become the most effective battery...!? (Source: Champion Cross, translated)