Arknights, but all characters are NPCs?

[Day 24: I, Lu Shang, male, [-] years old, am a time traveler. ]

【Good news, I have traveled to the Ark of Tomorrow. 】

[Bad news, everyone except me is just an NPC. ]

[Everyone just repeats the same sentence mechanically, and does the same thing every day. ]

I suspect they are playing me.

【So I went to find Kal’tsit, who knew everything. 】

[The next day: Kal’tsit is very moist. ]

[Confirmed, they are indeed NPCs, not playing me. ]

So what should we do next?

[Am I the only living person in the world? Will I die alone? ]

[Day 4: The Angel of Power unexpectedly looks slim in her clothes. ]

[Day 5: Xinteleya is really flat. ]

[Day 6: Lu Shang, oh Lu Shang, how could you be so depraved. ]

[Day 7: Skadi warms people’s hearts. ]

【… … 】

[Day 30: Wait, Kal’tsit seems to be alive?