"I know, I'm sorry," Kurt murmured, rubbing Koschei's back slowly, his other arm holding him tight. "Did it get worse when I came over? Some Time Lords have a bit of a reaction to me."
Well, one in particular, and that hadn't been the Master. The Master Kurt had known had actually relished his uniqueness, enjoyed it. But this was just a boy. Maybe the kid was finding his 'wrongness' was hard to bear.