Dean Wichester and the world of Harrr Potter

Summary: What if Chuck killed everyone except Dean facing an eternity alone Dean breaks. Offering Dean, a deal he agrees to send Dean Winchester to a magical world and if he unites the Magical world and removes 80% of all Corruption, he will send Dean back in time. Chuck never mentions that he would become Harry Potter in the worst possible Magical world or that in this world the supernatural world he fought and knew so well was a thousand times worst and stronger. But, hey at least Chuck gave him Archangel Grace FUCKING GRACE. Dean Winchester must make a true Magical world instead of Hidden Alleys and underground homes, small villages, and Manors out of the way