I have to say,
this woman named Caroline does know some flashy moves, but she lacks real combat experience. Her strength and speed are above average, but in front of Brian, it's child's play.
A series of punches and kicks.
Caroline, who wasn't very resistant to beating, honestly confessed her origins.
She is Susan's best friend, and their families have been close for generations.
Caroline is three years younger than Susan and had just graduated from a special agency this year.
Most absurdly,
Caroline had always had a penchant for violence since she was little.
After returning, when Caroline learned that Susan had someone she liked, she became very jealous and had someone thoroughly investigate Brian, uncovering Brian's part-time job as a Vehicle Appraiser.
Thus, she schemed with Susan, trying to expose Brian as a scumbag.
The effect was mediocre.