A little backstory owo: Soooooooo, Yorara's mother is the now deceased queen of their Kingdom (Hatekina), and Kaguya's mother is of low-birth, and worked at the Brothel (basically a prostitute). When the King's late wife died, in a frenzy of grief, he got very drunk, and allowed his friends to take him out to a Brothel. 9 months later the Brothel worker he had.. slept with, gave birth to a baby girl, whom she gave to him. He raised her with Yorara in the Palace. While Kaguya loves Yorara, she can't help but feel jealous of all the praise she gets. Yorara, a woman of high birht on both sides, was much more loved and appreciated than a lonely princess with an anonymous whore for a mother.