Battle Aristocracy

The daughter of a baron, Alice Nanadan, vows to seek revenge against the "Battle Aristocracy," a system of noble ladies that continues to this day alongside the royal family. In this world, titles are not bestowed by bloodline, but rather by military might. Duels between young ladies eventually became known as "dances," a national pastime, and a major entertainment event that has garnered vast amounts of money. This year, the royal family will host a special dance to determine the bride of the second prince. Suddenly, Alice, a transfer student from an unknown baronial family, appears among the dances and throws herself into battle against the young ladies who are fighting for the throne, carrying the pride of their respective families. Honor, love, and the crown. The battle between these ladies, with everything on the line, is about to begin.

(Source: Shueisha, translated)