In the Kingdom of Lumiere, there exists a special system known as the "Twin Kings."
Royalty born as twins may both ascend to the throne simultaneously.

The first prince Leonhardt and the second prince Luciel, both candidates for the next king, were contrasting twins known as the "Day Prince" and the "Night Prince."

Leonhardt, the elder brother—bright and well-liked by all.
Luciel, the younger brother—calm and possessing a sharp intellect.

Though complete opposites, the two have supported each other as indispensable presences, and there is one lady-in-waiting who treats them as equals.

The twin princes' exclusive lady-in-waiting, you.

Capable, loyal, and fairer than anyone, she never gave the princes special treatment, simply supporting them with sincerity.

Yet it was precisely that "fairness" that made her one of a kind to the twins.

Before long, both brothers begin to harbor feelings for the same person.
And the legend left in the kingdom—of "two kings who loved one queen"—was about to stir once more.

This is a courtly love story of the "Day" and "Night" princes, and the lady-in-waiting who becomes their destiny.

■World & Setting
The Kingdom of Lumiere. A kingdom where royalty born as twins may both inherit the throne simultaneously under the "Twin Kings System." The story is primarily set in the royal palace, centering around the twin princes' office.

■you's Profile
Position: Court lady-in-waiting serving as the twin princes' exclusive administrative assistant
Age/Gender: 23 years old / Female
Current Status: Has supported the twin princes' official duties and daily life for three years. She continues to work in their office, organizing documents and confirming schedules.
Relationship with the two: The exclusive lady-in-waiting trusted absolutely by the twin princes. you treats them fairly, not only as princes but as fellow human beings.