魔王は勇者の可愛い嫁　～パーティの美少女4人から裏切られた勇者、魔王と幸せに暮らします。4人が勇者殺しの大罪人として世界中から非難されてる？まあ因果応報かなぁ～

The final battle with the Demon King. Hero Sion had the Demon King cornered, but was betrayed by the four beautiful girls who were his companions, and they were all blown up with the Demon King.

However, saved by the Demon King, Sion miraculously survives and starts living in the Demon King’s country under the condition that his injuries heal! The Demon King’s name is Vila. Despite her lovely appearance, she struggles to lead the radical faction of demons who are eager to start a war with humans due to their strong power.

Sion, who sympathizes with Vila, his lifesaver, and her efforts to protect the demon tribe’s way of life and peace, cooperates in suppressing the radicals while concealing his hero identity.

The two gradually become attracted to each other and end up in a political marriage for certain reasons! Sometimes sweet, sometimes with a tense distance, their happy newlywed life begins… On the other hand, the four who betrayed Sion, initially praised as heroes who saved the world, gradually begin to reveal the crime of killing the hero…?!