Past Lives of the Thunder God

He was the hero who brought down the Heretic Cult that drove the Murim world to ruin.
The protagonist was killed due to the betrayal of the seven emperors becasue he was too strong and they didn’t want him to be a hero. He was reborn as Baek Gong, a crippled person who was in despair. It’s only been 30 years since my last life. “So my enemies are still alive?” This is his Revenge and his final journey!