Newlywed Quest: The Demon King's Daughter Wants to Seduce the Serious Hero ♡シンコンクエスト 魔王の娘は真面目勇者を堕としたい♡ ; Shinkon Quest: Maou no Musume ha Majime Yuusha wo Otoshitai ♡ ; Shinkon Quest: Maou no Musume wa Majime Yuusha o Otoshitai ♡

Harold is the descendant of the hero who defeated the evil demon king. In this peaceful era, Harold has become a convenient handyman for the townsfolk.One day, a sacred book predicting the world's destruction is discovered. The condition to avert this catastrophe is... "you must complete the 'Newlyweds Quest' with the demon king's daughter." Thus begins Harold's unexpected married life with Yona, the demon king's daughter.While Harold still feels bewildered by all this, not only can Yona perfectly handle the household chores, she sweetly pampers him when he's tired. However, she harbors a secret...