Y/N downloads an app named mystic messenger. Y/N opens the app and receives a random message from a character named "Unknown" asking for you to go to an apartment Y/N happily accepts the persons quest and goes to the location.
By the time Y/N is at the location there is a lock with a numbered code. Y/N asks if unknown knows the code.unknown says yes and texts Y/N the code.Y/N enters the code and walks inside.
Y/N gets added into a chat room with four men and one female.
The people talk about their personal lives until someone notices Y/N was in the group chat.A man named 707 asks who you are.Y/N chose not to say and 707 had to see by himself and realizes Y/N is at Rikas apartment,a worker that passed away a year before,they started thinking you were a person Rika chose to take over her job.They then called you the stranger.