The Demon Twins

"I've heard the rumors but you two truly look nothing alike."
"Does it matter?"
"I suppose not, kill me off then."
"It's my turn, Louis." "Get on with it then."
With a loud laugh, the giant man brought down his hammer. With a squelching sound, a head was ground to a paste.

This story centers around twins, starting off from their youth they go through a gradual progress in getting stronger. The stronger they become, however, they realize more and more that they will never get peace.

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Disclaimer:
Firstly, this is my first long novel.
This story will be slow, hopefully, I can do proper world-building.
Power progression also won't be all too fast.
I have no editor, so grammar might be off at some places.
Hopefully, you'll enjoy reading it.