I’m the Sub Male Lead in Romance Fantasy, but I Don’t Like the Female Lead

I fell into a world of romance fantasy that I had never read before.

At a glance, it looks like a northern grand duke fighting over a woman with the crown prince, so it’s like a sub male lead…

“My fiancé is prettier?”

Yeoju is a bit far from my style. Why don’t I just take that girl and live happily ever after, proud of my engagement?