 At this point , the story begins branching into different timelines that can be experienced in any order , depending on the choices made by the player . While completing the first set of puzzle rooms , the participants learn of a pandemic caused by Radical @-@ 6 , a virus that slows down its victims ' cognition and drives them to suicide . Although dependent on a given timeline , the characters either discover the murdered body of an old woman or antimatter bombs . Additionally , the pasts of the other players are explored : Luna is a humanoid robot , tasked with maintaining the Nonary Game ; Tenmyouji willingly joined the game , together with his adopted grandson Quark , after being promised a chance to find a certain woman ; Alice and Clover are Department of Defense secret agents tasked with stopping the religious cult Free the Soul ; and Dio is a member of Free the Soul . Dio had murdered the old woman and took her place in the game so as to plant the bombs . In the timeline leading to the game 's ultimate ending , Sigma defuses the bombs , while Dio is restrained and incapacitated . 
