At that insistence, Philip tilted his head and looked his partner directly in the eyes. It seemed that he'd made a miscalculation. It was only for emergencies, and yet...

Of course. Shotaro had spent a year fighting by himself with the Lost Driver. Philip had only used it for a short time, so it didn't hold the same unpleasant associations for him.

He rested a hand on Shotaro's arm and smiled reassuringly. "Don't worry. With any luck, we won't have any need for it."