Aesirs decided to create their substitutes called "angels" in order to guide Humans in Midgard but as many years passed, their relationship worsened and made a conflict called "Forbidden Game" and Aesirs decided to throw them in the 10th realm, as their punishment. The history of angels and humans referred to Humans as "Fairy Tale". Aesirs created a total of three angels and the last and perfect angel they've created referred as "Guardians", yet failed, had commenced a conflict within the 10th realm, also called the "Forbidden Game", and a single Guardian created an "unknown enemy", wishing to regain the great and better past, and many things had been stopped, prohibited, forbade, forgotten, and changed after the incidents. As years passed by, the policy still lingers and Guardians gained peace. But no one ever knows that everything in the 10th realm is being deprived, owned, and corrupted, and it continues to exist until then. The new generation of angels, who are unaware of the truth, are the one who will bring their world into light.