The Rise of the Demonic Hero

I was transported to another world along with the future heroes the loner and the future love interest popular girl.
Because I was not given powers like the heroes I was shown the Darkside of humanity I was framed for something I didn't do but still got exiled on the verge of death and they did it in the middle of the demon country.
Luckily for me, I had enough luck to be saved by the demon king, not because of kindness but because he needed a bodyguard for his only daughter in exchange I became his disciple along with awakening my dormant powers and my true form a Demon.
I was reborn as a powerhouse wreaking havoc all over the human realm along with facing my old friends and nemeses the heroes in the end I was called The Demonic hero, Demon knight, Hero of doom, And lastly the Demon king
NOTICE THE COVER IS NOT MINE