Gachi Koi Maou-SamaGachi Koi Maou-sama; ガチ恋魔王様; Горячая любовь владыки демонов; 真爱粉魔王; 陷入爱河的魔王大人; The Demon Lord Who's Seriously in Love

A hero undertakes the task of defeating the Demon King for the sake of world peace. When he arrives at the Demon King's castle, he is greeted by the Demon King with a marriage certificate in his hand! The hero is bewildered by the Demon King's strong appeal to marry him, but...? A love comedy about a hard-loving Demon King and a salt-addicted hero whose world is in danger of extinction!