Gyakkou Akuyaku Reijou wa Tadaima Kyuukon-chuu: Chikaku ni Ita Kishi ni Kyuukon Shita Dake no Hazu ga, Dekiai Route ni Hairimashita!?

At the age of 12, Serena Ashenheide attends the party to select the Crown Prince's fiancée. She recalls that she was once the fiancée of the Crown Prince, known as "the most evil woman of all time," and that she was framed for a crime she did not commit by the Crown Prince and his sister-in-law, and died in prison at the age of 18. "This is bad, I must avoid getting engaged to the Crown Prince at all costs!" she thought, quickly proposing to Glenn Bryant, a beast knight who happened to be there, and successfully avoided her engagement to the Crown Prince. However, Glenn, who initially dismissed her as a child's nonsense, suddenly decided to accept Serena's proposal...!? This is the start of a pure love comedy that begins with the lies of a villainous young lady and a beast knight! (Source: Futabasha, translated)