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.
And you're just... 
talking to me like it's normal.
وتكلّمتِ معي... بأسلوب طبيعي
Und du redest einfach ganz normal mit mir.
¿Y por qué me hablas como si nada?
¿Y por qué me hablas como si nada?
Ça t’arrive de parler normalement,
en fait…
E mi stai... 
parlando come niente fosse.
E você tá... falando normal.
Хотя только что нормально разговаривал.