In the distant future, the only existing beings in the world are robots. They are the last remains of the human spirit. However, mankind is not dead. Technology exists. It is capable of transferring human emotions and memories to these robots. But with limited space, new memories will gradually overwrite the old. Transferring them into songs and storing them in a place called Cytus, the memories will last forever. The robots use these songs to experience human emotion and dream that souls exists in each of them. Description from Cytus Wiki - http://cytus.wikia.com/wiki/Cytus_WikiAll Rights Reserved