Of all the places...

After the war tore him apart - Harry packed a bag and fled to the muggle world.

He trained to become a teacher, and had been rebuilding himself painstakingly while working for a living. He had drilled 5 years of self defence into students so far, and he was damned if he was going to stop now.

Even though Draco Malfoy found him.

AKA the triwizard tournament, but muggle and probably less lethal.