He sighed. "They injected me with some kind of virus," he said quietly. "It caused me to mutate. Violently." He glanced at Yohji, hoping the other man would get the idea and not ask for too many details. "It apparently can be reversed with a tranquilizer... I managed to steal a couple before I got out." He opened the desk drawer, and gestured at the vials. "Hopefully I'll be able to use them myself if it starts, but if not, I need you to." He met Yohji's eyes. "I lost control, completely. I don't know what would happen if I was out in the hospital like that."