[To think both people who know Sebastian best assume he can't let his murderous urges stay, well, urges. Clearly this says more about those people than it does about Sebastian.
Of course there's a helping hand, and Sebastian kneels before Ciel, ready to help with any dishevelment. With a shrug of his shoulder the vulture spirit leaves to instead take a backseat at the windowsill - it and Sebastian are synched like that already, apparently.]
Just short of four weeks. [He could give the exact number of days, hours, minutes... but that seems like excess detail.]