Halfdan Ragnarsson nee Potter

Hadrian Potter has decided that he is done with the wizarding world and stepped through the veil, Reborn as Halfdan Ragnarsson follow him as he takes the world by storm and becomes the most famous viking to every live. No slash !OP Harry!, Dumbledore Granger Weasley bashing, Aslaug bashing slight Ragnar bashing !Smart Harry! Pairings Harry and Astrid, May change