When the Hero Came Back Wrong (слэш)

For fourteen years, Harry Potter has been raised to die.
Hunted since birth by the Dark Lord Voldemort and worshipped by the Light as their destined saviour, Harry has spent his life obeying the powerful leader Albus Dumbledore without question. Until the finale of the Triwizard Tournament, when he discovers the truth: he was never meant to survive.
Terrified and forced to face Voldemort in an unequal duel, Harry makes one desperate wish for someone, anyone to help him.
Magic answers.
A forty year old version of Harry is torn from another universe where Voldemort got the philosophers stone and took Harry turning him into something feared by entire kingdoms. Scarred, violent, and known only as Abaddon, he saves the boy without hesitation… and declares war on both sides.
Now hunted by heroes and monsters alike with only a bitter and lonely potions master for support, Abaddon will do anything to keep Harry alive even if it means burning the world that tried to sacrifice him