Everything was Beautiful, and Nothing Hurt

At any given point, there is exactly one Light and one Dark Champion, titles generally only known to those gifted with them. Albus Dumbledore, after one too many reports of violent outbursts from one 'Harry Potter', believes that, following the events at Godrics Hollow, he is Voldemort's successor, the new Dark Champion. Longer, more comprehensive summary at the bottom of Ch. 1.