Alucard retained the fangy grin that he'd worn when entering the room.   Integra may have been correct about his lack of restraint but that overlooked the detail that he was no longer even remotely human.   This particular mission was much more in Seras' league than his own and he'd simply linger in the shadows until he was needed.    "Of course, Sir Integra."   He even removed his hat as he sketched a half bow....then disappeared into the shadows.