~RELIC~ [Sans x Reader]

Roaming the underground is no longer the monsters you know and love, but monsters you can grow to hate.

Monsters that kill, eat, devour and consume the ones you hold dear.

And take away the things that matter most to you.

But the question is...

What does matter most to you?

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"✡︎⚐︎🕆︎ 💧︎☟︎⚐︎🕆︎☹︎👎︎☠🕯❄︎ 👌︎☜︎ ☟︎☜︎☼︎☜︎📬︎📬︎📬︎"

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[ !Warning¡
This book will have a lot of triggering themes in it. Such as: depression(common coping mechanisms(cutting, etc.) and suicide mentions), a bunch of panic attacks (because that's fun-), and gore, violent themes, sexual themes-you get the point. No lemons though.
There is some Gaster x reader in this too, so, uh...
Bewareeee-
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The art in the cover isn't mine, I just edited it.

I also don't plan on dragging this book on for too long, this will be more of a short story for fun if anything. If it ends with no more than ten chapters, please don't be surprised.]