I Reincarnated as a Villainess, but Why Did I Become a Cat Butler Instead?

I transmigrated as Rowaine, the villainess who was executed for abusing a werebeast. In order to escape death, I decided to replace my sister Linier in her arranged marriage.

The problem is that Duke Blois, the groom, is a cat werebeast who is known as a bloodthirsty battlefield monster…

“My dear, I heard your hobbies include abusing werebeasts like myself.”

“I haven’t heard of such a condition stating that women who abused werebeasts could not be Your Grace’s wife, though.”

His emerald eyes flashed dangerously at me, I quickly kept speaking before he could say anything.

“If my hobby is a problem, then I promise that I will never abuse you, Your Grace.”

“Ha– what?”

This is the story of a ten-year contractual marriage between a cat lover and a prickly cat werebeast.