The embodied world of human collective subconscious is constructed from the forgotten memories of all intelligent life. Time, space, and physical laws here are all governed by "rules."
· Disciple: Like the protagonist, a "player" who retains some memories and has strong obsessions.
· Xu Ling: A lost person who has been completely assimilated into the world and lost himself. He is a "disciple" from the past.
· Secret Keeper: The concretization of the rules of each copy is often the projection of a powerful obsession or historical fragment. The only way to defeat it is to gain insight into the truth behind it.