What Do You Think REALLY Happenned To Nagi Springfield?

I think that something happened when Negi was a baby that had to do with his parents, namely his mother and his dad, Nagi, had gone to find her. Leaving his son to the two people he trusts the most, his niece Neakene(Negi's cousin) and his brother (Negi's Uncle).

i think he romes anywhere he wants to avoid problems to the ones he cares....or some other reason?

Who the HELL is Nagi!?