Raph had once heard of a saying, 'When a predator meets another, they avoid each other'.
Well, in simpler terms, you could say both were aware of what sort of destruction could ensue if they were to strike at each other.
Then again, you could say it was just a bizarre way of explaining how one avoids an enemy strong enough to offset their chain of command.
Now, what does all this have to do with Raphs current situation? Or rather, the two individuals that had bumped into him.
It was a primal instinct, perhaps their innate feral voices screaming at them to either attack or flee.
Raph found this interesting, maybe frightening, as two individuals strong enough to cause this much stir within him shouldn't have access to the Academy so easily.
He took a step forward, his thoughts swirling in when the man with the black shades laughed out and placed his hands on Raph's shoulders.