A brief description of the manhwa The Max Level Hero has Returned!:
The powerless prince of the wretched state of Davy.
After falling into a coma, his soul escaped, and where he arrived there was a huge corridor where the souls of the heroes gathered.
He trained for a thousand years and is now back as a top-tier hero!
“The time will come and I will meet you face to face!”
He got everything in his own hands and returned to take revenge.