Zenith's eyes go wide. "Wait a minute, that- that is not a toy!" The katana is emitting a faint white glow, and the blade itself is a pure, blinding white. It also emits a magically aura that is large enough to be instantly sensed by anyone capable of sensing magic. Zenith breaks into a run, following the two. "And- and it's perfectly sharp enough, thank you!" He runs past Evelyn, snagging his katana from her on the way, and runs alongside the thief for a moment, giving him a crooked grin. Then he kicks him in the stomach, sending him into a back alley. He chases after, and the two- and after a second, three- of them are out of sight of everyone.
Zenith smiles- but it's not a friendly smile. This smile is dark, reflecting the danger in his eyes. "Now, you took something that belongs to a friend of mine. You're going to give it back now."