Honkai: Star Rail: What Does It Mean to Exist?

How do we define the existence and meaning of life?

I don't know, but...

All living beings, I shall become death, recording the passing of all things in this world...

All living beings, I shall be buried in the graveyard, where it shall forever remember the birth and decay of all things.

It shall also bury everything...

My name is Mu An. May you all rest in peace beneath the earth.

(Some plot elements are original. If anything seems off, feel free to say so, but I may not take all the advice (๑˙ー˙๑))

(I can't possibly pontificate about everything; there's too much. Just enjoy the story. Mainly, I'm using this to practice writing.)