I have an arranged fiancé.

My fiancé, the legitimate heir of a ducal family, seems to be incredibly popular with women.

And soon after my social debut, I discovered he had a potential mistress.

Apparently, she picked a fight with me at a ball.

So this means I can accept her challenge, doesn't it? Right?

Yes! I just adore messy, no-holds-barred battles between women!

(This is a typical childhood friends romance story.)

The book will be published by Ichijinsha Iris Neo on November 2, 2016.