A diamond hidden within the gray line introduction

Imagine a alternate world where the mario universe has a modern feel to it, and is full of action. Full of secrets of the past and bizarre moments along with horrifying moments as well. Now imagine all of this happening after the events of bowser's inside story but with a twist you'll never imagine was possible that involves the kind of horror you could never comprehend which is also part of an ancient history that was mostly buried and forgotten.

This story contains swearing, blood and dark moments as well as light hearted moments, and a couple of shippings. One of them being not at all what you expect!