In the second half, Oshiba and the rest of the team are in a good defensive posture. They're not rushing the ball like they were at the beginning of the game, but they're just as solid as they were in the first half. The only thing that worries them is that Mizuki is off, and they'll have to find a way to get him back on the field soon. The corner kick is a good one, and it's clear that Oshiba is the one who's going to get the corner kick. He's not angry at Mizuki, he's angry at himself.