Gaku is the son of former Japanese national volleyball star Kei Shishiya. Through middle school, he’s played as his team’s ace hitter, though part of him wonders if that’s a title he earned, or one he was simply given. One day, Kei meets Noboru, a generational volleyball talent with a monstrous spiking arm, and vows to turn him into the next national standout. In the wake of that choice, Gaku realizes he can’t play…