【From Maple Novels, the title has been changed to "The Grumpy Duke Desires the Instruction Manual of the Lie-Detector Lady" and will be released as an e-book】Exclusive pre-release begins on Piccoma from December 23, 2022!

※This is the web version. The settings and story differ from the e-book.

Countess Ophelia possesses the unique ability to detect lies. Due to this power, she lived a reclusive life, unable to socialize. However, drawn by the reputation of Duke Claudio's beauty, she attended a ball. But the constant lies in the nobles' conversations overwhelmed her, causing her to act strangely. Claudio, who loathes lies, recognized her special ability and forcibly recruited her into the Ministry of Penal Affairs, where he serves as director.

Utilizing her lie-detecting ability in the interrogations of criminals at the Ministry of Penal Affairs, Ophelia becomes embroiled in an incident connected to a ritual at a temple. Surrounded by a cast of unique colleagues, and while somehow managing to continue her duties in the Director's office, Ophelia even catches the eye of Stella, Claudio's fiancée.

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