My fiancée, who claimed to have "never had any experience with prostitution," is so skilled in sexual acts that I suspect she's lying to me. (JUR-111)

Yu, the eldest son of a century-old wagashi (Japanese sweets) shop owner, is engaged to Nuan. To marry into this prestigious family, she must gain her strict father's approval. Beautiful, healthy, and pure, Nuan should be the ideal daughter-in-law… However, she is actually the legendary "Rino-chan," a prostitute who has rejected three times in a row—a fact that must never be revealed. She insists on her chastity and forbids sex until their wedding, causing Yu considerable anxiety… Yet, Rino-chan (Nuan), the most popular and skilled woman, unexpectedly displays extraordinary abilities. Yu begins to suspect Nuan, and her father hires a private investigator to look into her background… What will the outcome be?