Poseidon betrayed his brothers pact of not having children. Knowing his brothers vindictive natures, he seeks to hide his son Percy. He believes that the magical world is safer than his own. However, he was severely mistaken. Percy and Harry attend Hogwarts together and witness the resurrection of the dark lord. AU mild Swearing. First Story! Percy's love interest poll on profile!

Percy Jackson believed after his second war he would try to have a normal life. However, the life of a demigod is never easy. He is tasked with guarding the entrance that connects the mortal world, underworld, and Tartarus. But after Annabeth loses contact with him everyone believes that he is dead. An evil being rises from the entrance and proves to be Olympus's most dangerous foe

Percy had just finished a second war. Hoping to return to a normal life which involved school and heading to college in New Rome. However, another war was in his midst but not from his world. Angels and Demons were always seen as myth to him. But he is proven wrong when a group of Shadowhunters find him are intrigued by his power and swordsmanship. AU Some Swearing.