The beam should really be Laure. Yuto notices that it's a wave controller, and it doesn't make sense for a spear bearer to use pure shinsoo to fight. Laure's the one most fit for such actions.
I wonder why Viole saved Anak.If he doesn't want to fight his friends he should eliminate them quickly.
Well if he shot her with a dark bullet, he would have been sent up to the Archimedes. And if he stole the gun, then it would have taken too much time. He's clearly in a rush.