A brief description of the manga Fiancée’S Observation Log Of The Self-Proclaimed Villainess:
Cecil is heir to the throne. The young prince is so smart that he is even bored as he quickly understands and grasps everything in this life. Once he heard from his bride, who is 8 years old, that she is a villain, Cecil was frightened.
The girl is convinced that this world is like the manga world from her previous life. That’s where she appears as a criminal. She’s planning on doing her job well, so she needs to break up the marriage agreement. Now the ex-fiancée is trying to make her ideas come true and she’s starting to ruin Cecil’s life.