There are only a few Spoilers:

A man wakes up in hell , not knowing how he died.

After many years of torture , he is given a chance to escape.

He ends up in Game of Thrones as Joffrey Baratheon.

Things escalate from there.

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Unlawfully taken from Royal Road, this story should be reported if seen on Amazon.

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Most importantly:

I write this book to motivate myself to work towards my dreams.

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-No harem (or romance)

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-No cheats/golden fingers/systems

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-True neutral MC (will do both good and bad things that bring him closer to his goal)

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-Mc feels emotions, but he won't whine , cry , or be depressed. Ever.

-He will be training or trying to be better all the time.

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Power system:

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Soul cultivation follows the rules of Reverend insanity - from 1 man soul to 999 .999.999 and then desolate soul. The demons have mutated demon souls , so theirs are stronger than normal.

Demon rankings are -

low , middle , high , lord , king , god

each having 3 respective small tiers : low-low , low-middle etc

It is mostly correlated with the strength of the body, and at higher tiers , grants access to spells related to a demon's bloodline.

It is mostly increased through eating parts of stronger demons ,

LOTM style

If one has a weak soul , they will go insane when attempting to evolve.