+++++God created many worlds. It is possible to open portals between different worlds at any time and at any time during the long years. In order to maintain the order between the worlds, people from different worlds selected by the will of the gods travel between the worlds, and send back people or animals who came to other worlds due to the cracks in the world, thus maintaining the order of each world. There is even a separate world that exists for them. +++++++They are the [Shuttlers]. ++++++++ Such a balance was interrupted by a world's civil war a long time later, and the prison of the gods could not hinder the desire of those fanatics for freedom. ++++++++ In this way, An Yukong became a shuttler in this unlucky period. Her predecessors had passed away long ago, and she was the only shuttler in this world. +++++++++She didn't know whether it was luck or misfortune, but just after she made her choice, everything started.