Because Karasuno's plays become messy and the match's rhythm gets thrown off, they change setters. Sugawara goes onto the court in place of Kageyama and because he's always seen things from outside the court, he says he knows what's going on, and Karasuno starts their counterattack. Meanwhile, after seeing the match from the outside, there's a change in Kageyama as well.

Source: crunchyroll

They finally approach the final set of match and Hinata and Karasuno are fired up. However, since Seijoh are so tight as a team, they start to take the lead. At this rate, Seijoh will leave them in the dust. To change the flow of the game, the coach decides to...

Source: crunchyroll