the Boy who lived or the wolf that howls

When Harry Potter's soul gives out on his body, a being from another world anchors him to the world of the living with a chance to right wrongs set upon his life, with the rage of a Cerberus and ambition of a wolf, Loki Fenris will take the Wizarding world by storm, dragging it to a better understanding... kicking and screaming, Oc/Harry potter/Harem, mainly Luna/Harry