Omni Magic!

The Kingdom of Elaire was blessed by the Goddess and protected from monsters. People of Elaire enjoyed peaceful lives and the memory of war was fading. One day, "Royal Treasure" was stolen from the vault of the castle. Since the incident, monsters started spawning all around the Kingdom. To solve the issue, the King gathered adventurers from all over the world, appointing them to be "investigators". Their mission was to research monsters and bring the treasure back. The King promised to grant one wish of an investigator who solved the issue...