To Save My Sister, I Was Betrothed to the Female Emperor from the Start

Li Ran was born into another world and became a handsome man renowned throughout the land.

He had been living the carefree life of a spoiled official's son in the capital. But to rescue his younger sister, who was imprisoned in the Heavenly Prison, he resolutely decided to sacrifice his looks and enter the imperial palace, taking part in the palace examination the Empress had arranged to find consorts for several princesses!

Thanks to his talent for plagiarizing famous works, Li Ran passed the palace examination with flying colors!

But he never expected...

The Empress would bestow him upon the most domineering, tsundere little princess of them all, the Fourth Princess!

And worst of all, the Fourth Princess was best friends with his own younger sister!

Fortunately...

The System finally showed up!

However, the System's ultimate mission was to help this unreliable girl win the brutal struggle for imperial power and become the Crown Princess!

This blurb does the story no justice. The novel is also known as How to Train a Little Princess into a Great Demon King and In the Imperial Palace, the Princesses All Want to Win Me Over.

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.