As always, I don't own Harry Potter or Negima, I'm just taking a look into the kaleidoscope.
Those damn inbred hicks and their constant attempts to reveal the existence of magic! for several months a terrorist group within 'Wizarding Britain' had been attacking the mundanes, killing them in their own homes, and worst of all, leaving giant floating, sparkling emerald skulls in the sky above their victims houses. The situation had finally gotten to the point where the Council of Mages refused to listen to the empty platitudes of the 'Minister of Magic' promising to take care of the problem and an operative of the Council had been sent to take care of the cause of the problem. Permanently.
The name of the operative was John Rose, and he was not amused with what he had found, not amused at all! John had tracked his target to a small house in Godric's Hollow, the front door blown inwards and the corpse of a young man lying in the entry hall. when he moved up the stairs he found his target, the self-titled 'Lord Voldemort' (*snicker* what kind of idiot calls himself 'Lord I'm Afraid of Death'?) standing in a ritual circle made using the blood of the mother of the infant he seemed to be in the process of sacrificing. already he had begun carving something into the poor childs forehead!
John couldn't allow such a crime to be committed while he had the chance to stop it, so rather than calling out to the bastard about how he was under arrest and should come quietly, he opened up with his most powerful small target fire spell and greased the fucker before rushing forward and doing what he could to calm down and heal the kid.
The child eventually calmed down enough to look John in the face, and John was instantly captivated.
Hadn't he and his wife been trying for a child for a while now?
Hadn't this boy just recently been orphaned by a crazed 'wizard'?
Didn't the local magical population tend to make witnesses of its little indiscretions, especially those that couldn't protect themselves, disappear?
Three problems that seemed to solve each other!
John spent the next several minutes gathering up some things, like the boy's toys or a few pictures of his birth family, and then prepared to bring harry back to Wales with him to introduce to his new family.