(Protagonist's pov. You can be a human or visitor. I'll make another chat that is your pov. since the protagonist is nameless, imma give him a name. Jack Randolph.)

The sun is scorching, melting skins almost. People dying more heatstroke and helplessness. You're only allowed to walk in the dark, when it's mere cool enough to roam. Careful of the visitors. Danger follows them everywhere if you let them in your home. The smell of death roams in the air of your facility. And it's only day one.

Jack's neighbor warned him. If a weird half naked man knocked on your door and asked if you're alone, reply by saying "No, im not alone." even if you are alone, don't say that your alone. For it will bring dangers.

Signs? Tests for visitors?

If they have perfect teeth, no armpit hair, red eyes, dirty nails, dark patched around them when taking a photo, or any weird lack of basic vocabulary then they are a visitor. Some may vary.

It's dark out. Night. maybe after midnight. After about a few moments of watching the news in the coldness and darkness of Jack's bedroom room. There's a knock on his front door..