**Chapter 0**

What should I do…? I don't know. It must be painful, but it can't hurt more than the life I live in. Anyway, I'm getting closer to the building. The one that will end the world—the source of all this pain.

I've arrived. Just behind this door... Here I go.

"Huh! You scared me!"

. "What are you doing here?"

Hmm, you're here for the same reason, But you had second thoughts. You think I should, too?

Alright. First, my name is Dalia. What's yours?

...What? That's a weird name. Then how about I just call you Reader? Or maybe, dear Reader.

Look, I'll take the stairs, not the elevator. And I'll tell you all my problems on the way. If you find a solution to any of them, maybe I won't go through with this. How about that?

Okay, wonderful. Let's take the first step together, to the top... or maybe the last step to the bottom. Dear Reader, maybe you'll join me in the end.