As her reward for completing the quest, Tokitate gets to ask the Game Master whether this alternate world is actually virtual or not... and the answer is that it's an alternate Earth that branched off of the original Earth's timeline. Upon hearing that it's an existing world, Yotsuya trembles with the realization that he killed real people. Once he returns to the real world and resumes his normal life, the Game Master appears before him in the form of a young girl and leads him to a meeting with the next new player.
Only I am right, and the rest 
of the world is wrong.
أنا وحدي مُصيب، وبقيّة المجتمع مخطئون
Nur ich liege richtig und der Rest
der Welt liegt falsch.
Solamente yo tengo la razón
y el resto del mundo está equivocado.
Solamente yo tengo razón
y el resto del mundo está equivocado.
C’est comme si j’avais raison
et que la société avait tort.
Io sono l'unico nel giusto
e il resto del mondo si sbaglia.
Eu sou o único certo,
e o resto do mundo está errado.
Лично мне кажется, что это я один прав,