Maou wa Yuusha no Kawaii Yome: Party no Bishoujo 4-nin kara Uragirareta Yuusha, Maou to Shiawase ni Kurashimasu. 4-nin ga Yuusha-goroshi no Taizainin to Shite Sekaijuu kara Hinan Sareteru? Maa Ingaouhou ka naa
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 hero, Shion, faces the final battle against the Demon King but is betrayed and killed by his four female companions. He is rescued by the Demon King, Villa, and survives. Shion then starts living in Villa's kingdom. At the same time, the actions of the four who betrayed him begin to be exposed.