Mirror at the End

Mirror at the End (끝의 거울, Kkeut-ui Geoul) is a device that is responsible for saving the data of anyone that has passed all the stages of the Hidden Floor, before sending them back to the Hell Express. In the process of saving the data, their sworn enemy is deleted leaving only the data human behind.

About
A long time ago, the mirror had been smashed into pieces by Urek Mazino, who became enraged after discovering that his data could not be saved and copied properly because he is too powerful. This event caused a lot of anomalies, instability and errors on the Hidden Floor, such as a bug-filled Urek's Sworn Enemy was able to stay intact and not disappear even after Urek left, or special case like certain Data Humans who gained some level of consciousness.

One shard piece of this mirror was given to Ha Yura's mother, so that she could watch her son in the Hidden Floor grow up from the outside. This shard was later returned, making the mirror complete again.

Notes and Trivia

 * Mirror at the End is not the only exit door from the Hidden Floor, but can also be used as an entrance under certain circumstances.
 * If data people try to leave the Hidden Floor through the Mirror at the End, then their data is destroyed instead.
 * The Mirror at the End and the Mirror of the Past both make up the foundation of the Hidden Floor.