Noroware Seijo, Boukun Koutei no Aibyou ni Naru: Dekiaisareru no ga Oshigototte Zenryoku de Nigetain desu ka? (Light Novel)

In the middle of fighting off a demon, Cynthia - a saint of the Arbosian Empire - has a curse placed on her that transforms her into a cat! And to make matters worse, Emperor Yzak - who considers her an enemy - picks her up and decides to keep her as his pet. If he finds out she's a saint, she be immediately executed! So will she be able to live a double life in this desperate situation?!