Retired Hero Wants To Sleep

N Siri says:

MC is a hero named Ewald a magic swordsman who defeated the Demon King Belzedeus while trapping the Demon King inside himself. Most of his companions were killed and the continent was nearly destroyed. What Ewald got in return was to be locked away in the deepest and darkest Dungeon. If Ewald dies then the Demon King Belzadeus would be resurrected. The Empire itself is already scared of Ewald because of his powers. 27 years have passed and the Empire woke up and set Ewald free.

The Empire has found out someone has leaked his location and Demon Lords as well as new Demon Kings want him dead. New Demon Kings have been born since but they aren’t as powerful as the Demon King Belzedeus. This time there are just too many enemies and the continent isn’t as scared as it used to be about Demons.

Ewald decides to hit back and go on an Adventure to destroy the people who want him dead instead. His first party member is the young Demon King Usbel (An oppai loli character) who was captured by the Empire. Although Ewald is 55 years old he still looks like he’s 28 years old albeit with grey hair now. He’s a rough type of character, doesn’t care about manners or politics, super strong and hates arrogant/evil people. So he goes on adventures to attack the demons and destroy the corrupt people.

Does feel very similar to “The Regressed Demon Lord is kind.”