Koshi didn't consider himself a violent person, but he wasn't about to hold back when their lives and the safety of the school was at stake. Seeing the enemy double over to Toushirou's quick strike is enough to get him to take the opening, bringing the bat down on the back of his head, sending the U-Man down and out, completely unconscious before he even hit the grass.

"D, did we get him!?" asked Koshi, obviously a bit still shaken up by the sudden violent exchange, though apparently not even aware of the blood dripping down his face from where he'd been hit near his temple.