12 series tagged Royal family.
Even though I become a side character, I’m being adored by an overprotective duke 
Empress flower garden 
The Legendary Assassin Reincarnated as the Beloved Youngest Daughter of a Royal Family 
Me, The Heavenly Destined Villain 
Deadlines are Raining in the Status Window 
The Reason Why That Villainess Picked Up A Sword 
Husband Replacement 
I Was Just Having Fun With The Time Limit 
Silver Tree 
I Became the Master of the Devil 
The Youngest Child of the Family Is Preventing the World From Ending 
Lemon Pie Night