The Wonderful Life on the Frontier

Ashraf, the hero who defeated the Demon King. Seventeen years have passed since his triumphant return to the royal capital... and the future he envisioned is entirely different from reality!? He can't get along with his subordinates in the Knights, nor can he get along with the new King... When he is finally exiled, the one he encounters is a demon girl who calls him "Papa"...!? A wonderful, frontier town-building fantasy with a daughter and a dog!!