Summary:

The Gate of Lemegeton. That was the name of the magical phenomenon that changed the world forever by connecting us to the Underworld, creating the Mirror World and causing the collapse of the old world. Since then, not only sorcery, but also gods, demons, yokai, and fantasy races like elves and dwarves, previously hidden, have revealed themselves to humanity. Now, a thousand years have passed. Humanity has risen from the ashes of the old world and formed new kingdoms and empires. A new balance has been achieved; a delicate one between nations and new races, but a necessary one. However, the encounter between a young man full of secrets and a mysterious girl from a distant land could change everything...forever.