What's Wrong with You, Duke_ is a romance fantasy web novel about Lucerne, a crown prince with a terminal illness believed to be a curse, and Roxie, a commoner pharmacist who accidentally discovers that his symptoms are actually allergies. To avoid blame for his worsening condition, she pretends to be the famous but unreliable witch, Erin, and offers a fake cure to buy time. As she treats him with genuine medicine, the duke grows suspicious yet intrigued, and a chaotic romance develops between the cynical, dying prince and the clever, desperate pharmacist. Readers enjoy it for its witty banter, the slow-burn enemies-to-lovers dynamic, the unique twist of a medical mystery in a fantasy setting, and the satisfying redemption of a seemingly cold male lead through Roxie’s determined care.