**What's Wrong with You, Duke?** is a fantasy romance manhwa that blends mystery, psychological drama, and emotional healing within an aristocratic setting shaped by trauma and secrecy, following Eris Miserian, a perceptive and strong-willed woman who becomes engaged to the cold and enigmatic Duke Karsion Louvremont, a man feared for his violent reputation and unpredictable behavior that hides deep psychological scars, as their relationship begins as a political arrangement but slowly transforms through tension, misunderstanding, and moments of fragile vulnerability, unfolding into a story centered on uncovering buried memories, confronting past abuse, and dismantling emotional walls built from pain, delivering a compelling mix of romantic suspense, character-driven drama, and gradual trust-building that highlights the power of empathy and communication, while exploring themes of mental health, identity, control, and the difference between rumors and reality, supported by elegant artwork, expressive character emotions, and a mature narrative tone that sets it apart from typical fantasy romances, earning popularity for its darker psychological edge and emotionally rewarding development, also known as What’s Wrong With You Duke manhwa, What’s Wrong With You, Duke?, What’s Wrong With You Duke manga, 당신은 왜 당신은 공작님?, Ajin manhwa, Duke Karsion manhwa, Eris Miserian manhwa, dark fantasy romance manhwa, psychological romance manhwa, and noble romance drama series.