The Merchant Princess

To save her mother, Elara Caelus, daughter of a concubine, becomes a substitute bride but is abandoned at the wedding by Lord Kaelen Shaw. She secretly establishes herself as Chief of Eternal Wind Perfumery. Kaelen, hiding his identity to investigate a case, falls for her. When a poisoning occurs, their dual identities are exposed. They team up, clear misunderstandings, and are granted a marriage.