The - Caligula Effect Overdose [010069100b7f0800]...

The story is set in a virtual utopia called , created by a sentient Vocaloid-like idol named

(Mu) and a virtual doll named . In Mobius, humans can escape the trauma and pain of reality to live an endless, idealized high school life.

: Players lead a group of "awakened" students who realize their world is a simulation and fight to return to the real world.

’s songs to brainwash inhabitants and prevent anyone from leaving.

: These antagonists serve as the guardians of Mobius, using