(元)勇者と(次期)魔王の、魔王城までの歩き方

The long-standing war between the hero and the Demon Lord ends in a mutual agreement. The hero acknowledges his defeat, and the Demon Lord begins rebuilding the world under a peaceful rule. Amid this new era, the Demon Lord’s daughter, Abigail, is tasked by her father to escort the defeated hero on a mysterious mission. But what exactly does this mission entail…?