Nico and his Quest to Recover Thanatos' Mental Stability

Sometimes, Nico really hates the Gods. He had only just started to settle down and enjoy life and being with Will when some prophecy is sprouted that he's supposedly the main demigod of and so is tossed into Hecate's pet world to attend some weirdly named school, befriend and protect a golden trio, stop an alliance between an unknown entity of Greek origin and a guy called Voldywarts, and if that wasn't bad enough, he has to do it all alone and keep what he is and who he is an absolute secret from the very people who unearth all the secrets they come across. People not dying when they should, splitting their soul, escaping to become ghosts without registering and creating an immortality stone causes a lot of paperwork for Thanatos, and occasionally Nico. At least the last one is sorted out. Nico has to remedy the rest.