Apocalyptic Deep Diving Manual

[Backroom/Foundation/Cthulhu/Doomsday/Cosmic Mythology] Hey, do you know the deep sea? I'm not talking about the sea. I know there is no liquid water in your sector. What I'm talking about is another matter. It doesn't matter when the story begins. As you can see, I'm a homeless person who walked into this alley wearing a found robe and got stuck here. It is said that this is the deep sea and may be a special disaster. I have to be more careful. There was a very beautiful girl before, the girl who could make people laugh here, but she was eaten by the wall. Forget it, it doesn't matter. I was just sending my last message to a stranger. Why did I say so much? Ah, as expected, it cannot be sent, and this emergency contact seems to be meaningless.