The modern city "Mirror City" was "assimilated" by an unknown and strange force and turned into a huge "living cage." 99% Of the residents have been replaced by various [weird entities] disguised as humans. They live according to the set "script" and maintain the false prosperity of the city. 1% Of native humans are trapped and become "prey". There are daily "purges" where monsters openly hunt exposed humans. Survivors must survive and grow stronger without being noticed.
