Tada no Ossan × Maou no Musume no Henkyou Wonderful Life

Ashraf is the hero who defeated the Demon Lord. He returned in triumph, was promoted to become youngest ever Knight Commander, and 17 years have passed since then… But this is a future life very different from what he had imagined!? A wonderful frontier-pioneering fantasy, featuring a daughter, a dog, and an adventure that begins with exile!!

(Source: Tonari no Young Jump)