AspenZer0
Two royal siblings - the Crown Prince and Crown Princess - have reached the age to wed. Their parents, the King and Queen, are alive but aging, and decree that whichever heir secures the greatest alliance and public favor through marriage will rule the realm.
To maintain peace between the divided kingdoms of the realm, the monarchs announce the Unity Trials, a grand competition where both heirs must choose a spouse from a pool of carefully selected candidates - nobles, dignitaries, and foreign envoys - representing every major province and rival nation.
The Trials are broadcast to the entire kingdom. Citizens (You guys) can vote for their favorite contestants, influencing who stays or is dismissed.
But beneath the glimmer of romance and politics, a secret rebellion is brewing. Unknown to the royals, several contestants have infiltrated the palace as part of a coordinated assassination plot.