"Hm." Hayami made an amused noise in the back of his throat, tilting his head to the side as he watched the other's back. While he hadn't planned on attacking the other and causing a show, it was too difficult to keep letting these slights go by unpunished. It was underhanded to do something in such a way -- he really preferred to be up front about his concerns -- but simple logic and kindness wasn't going to work on a student who was so intent on outright insulting him.

Removing his switch from his pocket, Hayami clicked it to activate his power, the only sign of him moving forward from the position he'd been in being the sound of the links on his staff. As soon as he was behind Yamada, closing only the few feet that had been between them, he swung the staff in front of Yamada's body and grabbed it with his other hand. The intention was to pin the boy there, unable to move his arms and with his back against Libra's chest. "It's unfortunate that you insist on such childish defiance."