Simple geometric shapes worked best for Aizawa, who had simply decided it would be appropriate in battle. The more complex the device, the more limited any given attack could be. The application of a single shape to repel an attack or bind an opponent lent itself a great deal of room for him to conserve his stamina.

To boot, he used his abilities minimally.

One yellow ring user had distanced himself from a fight, looking to catch his breath in the middle of things. In the chaos, he managed to back off as he wasn't an immediate priority. Aizawa marked him from afar, watching from a scope he had crafted with his own ring. With minimal use of the ring's power, Aizawa strafed and flanked that one combatant, opening his eyes wide, just in case. If that ring user could detect presences, Aizawa had shut down that capability in an instant with his 'Erasure' quirk.

Whether the power was removed or not, the yellow lantern certainly hadn't noticed Aizawa until it was too late. His head reeled back as a glowing purple length of ribbon closed around his throat and a knee shoved into his back. Mercilessly, Aizawa cut off his air until he dropped to the ground.

For good measure, Aizawa struck him in the back of the neck to deepen his nap. So, he continued. He wasn't the sort of man to kill, nor was he the sort to linger in the spotlight. Aizawa fled, looking to continue watching from afar and picking off stragglers where he could see them.