A part of Theo didn't want to kill more UMS. They were still human, after all, just like him. Maybe they were only following orders, trying to survive in this cruel, broken world. But another part of him, burning with fury, wanted to end them. They had a choice.
Everyone had a choice. And they chose this dark path, choosing to become tools for monsters like that older man now pointing a gun at Aries, as if her life was the only thing keeping him alive.
Theo was on his own, and he couldn't afford to take any chances. If the two remaining UMS chose to walk away, he could rescue Aries and Beatrice without more bloodshed. The leader was just a regular human, holding a gun to his sister's head, while one of the last two UMS gripped Beatrice tightly.
"Theo! Behind you!" Aries suddenly screamed.
Theo instinctively twisted his body and saw it.