Heavenly Demon's New Path

In a martial world, the heavenly demon's cult has fallen after a war against the orthodox faction.
The sixtieth heavenly demon, Yeop Jin-Sang, was reincarnated to this world and died because of mysterious corrosive ki, but to his surprise, he got reincarnated again to another world.

First World: MHA

Note;
- English is not my first language, so there would be grammatical mistakes in this story.
- Please give my story a proper review.
- I accept a suggestion, but no spam!

Cover: https://www.pixiv.net/en/artworks/86633566
PS: I don't own cover or any characters that belong in this story, except for my OC(Original Character).