"Duchess Luka, the you guys killed... is the beloved maiden of the Yellow Kingdom...Next to her sister, Queen Maika. Duchess Luka helped a lot of children back then. She was respected by the whole kingdom and was also loved~... If the people found out that their King is marrying again the woman from the red kingdom who might kill him too so that they could conquer the yellow kingdom. Everyone won't just watch and congratulate these unison. They will soon, plan on making a Coup d'état to revolt. We won't want that." Amatsuki-sama explained.