Alright, here's some crazy theories and lore I came up with!

Date: December 11, 1994

So, you're playing as this character, right? And your main goal is to find your missing brother who's been gone for a whole 24 hours. He went on this hiking trip up the red mountain. Now, the local police couldn't really do much to help because, you know, they ain't got enough "resources" for a proper search.

But you're not giving up that easily! You take matters into your own hands and start your own investigation. So, you head to this gas station to ask around if anyone's seen your brother. And guess what? The cashier tells you that he actually saw your bro coming in to buy some snacks and water. That's a lead, right there!
But here's where things get spooky. The cashier goes on to say that there been quite a few people who've gone missing in that area over a decade. And I start thinking, Hey, maybe that's why the police couldn't do much. They've already used up their resources searching for other missing people.
And then, there's this creepy rumor floating around about weird screams and noises coming from the woods. The cashier warns you to be careful, talking about some freaky "wildlife." But you're determined, so you keep going.
As you continue deeper into the woods, you come across this tent, but it's not your brother's. It belongs to some stranger who knows nothing about your brother. Still, they give you the same warning as the cashier did.
You decide to set up camp and rest for a bit, but that's when things take a dark turn. You wake up to eerie noises and screams. You can't be sure if it's your brother or something else.

Eventually, you stumble upon this abandoned house, and there's your brother's backpack, just lying there empty. But the place looks messed up, like a torture room or something. You start wondering if your brother got murdered or if there's something even weirder going on.
As you try to leave the house,You get killed by your own brother, or at least something that could looks like him. And there's another figure lurking in the background, another version of your brother or maybe a clone? Who knows! It's all so confusing, and there's no clear answer, kinda like those mysterious "Intruder" of a alternate that is your brother but isn't.
Thanks for reading this!