Nise Seijo da to Ikenie ni Saretara, Maou-sama ni Kyuukonsaremashita

Asha, a saint, is suddenly told by her fiancé, the crown prince, that she is a fake saint, that her engagement has been broken off, and that she is to be sacrificed to the demon tribe...!　I thought she would be captured by the Demon King and cruelly killed, but she suddenly asked me to marry her!　In that case, I will be of service to the Demon King!　With three meals and a snack, Asha's contracted marriage to the Demon King begins!