My fiancée, who claims to have "no experience with prostitution," is so skilled that it's making me suspicious. Akari Tsumugi JUR-237

Yu, the eldest son of a 120-year-old pancake shop owner, is engaged to Tsumugi. To marry into a prestigious family, she must gain her strict father's approval. Beautiful, hardworking, and pure, Tsumugi is the ideal wife… or at least she should be. But she also has another face: the legendary "Princess," the top-ranked courtesan for two consecutive years. This must not be discovered. She upholds the concept of chastity, forbidding sex until marriage, until finally… But the invincible Princess (Tsumugi) unconsciously displays her "special skill." Seeing this, Yuru becomes suspicious. Then, the father hires a detective to investigate Mai's surroundings… What will happen?