Thirty years ago, the Earth changed for the worse. Millions disappeared, and monsters flooded through portals, threatening to leave humanity extinct. Just when all hope was lost, the returnees came to Earth, fighting the monsters with their immense strength and magic. Now, monsters no longer flood from the portals, and the IHA was founded, bringing peace and tranquility, as well as heroes to the new world. It's been twenty years since the last Returnee came to earth, and the world seems to be at peace, despite the dangerous guilds and the constant search for power. Despite a few powerful enemies remaining in the world, humanity has returned to normalcy. What adventures lie ahead for a returnee?  It's time for Nick to carve out his own story