Riou is something of an exception in his world. Though he does have his microphone on him, he's chosen to keep it quiet. It isn't something he needs to train with, and the training grounds don't seem conducive to try to train with his alleged newfound abilities.

Though they're supposed to be using magic, Riou is a special ops Navy Sergeant. One of those people whose identity is soldier, even after he's been discharged. He is finding it difficult to figure out exactly what he's supposed to be doing magically, however, as he's expecting a combative ability-- not anything involving animals, which he typically views as Food. For now, he'd ended up helping someone as an obstacle to overcome. If he can't find his offense and his familiar is off doing whatever it is familiars do in their spare time, he's going to practice defensive maneuvers.

Riou is, decidedly, a very intense person. So that defensive maneuver had ended up a grapple throw over his shoulder faster than the person could cast their shield magic they were trying to perfect. They're groaning on the floor, ultimately okay beyond being sore, when he hears Jack.

"Yes, it's self-defense based in Krav Maga."