Twin Priestess Wedding ~The Two Brides~ (RJ01457471)

The protagonist, the second prince, had long harbored feelings for Yuka Kannagi, who had been by his side since childhood.
Yuka was someone who had walked alongside the royal family for over two hundred years, ever since the founding of the kingdom.

One day, a marriage proposal arose between the protagonist and Amalia, another of his childhood friends.
Conflicted by complex emotions, the protagonist accepted a nighttime invitation from Yuka, and they shared their first intimate experience.
However, afterward, when he proposed marriage to her, Yuka made a shocking confession.