You start to feel quite lightheaded as you wake up in the middle of a park during the Night, you don't remember anything about your past except that you've been given a Divine Sword Scared Artifact created from a Dragon's Tail. You slowly start to get up to get a look of your surroundings, you're in Tokyo but how did you until you see a huge pillar of light in the far distance known as a Gate, someone must've summoned you here as a Transient but you have a strange mark on your hand aswell.