Sono Tsugai Kon wa Ouji-sama to

――“Finally, I’ve found my other half.” Alshamia, a noblewoman, is 24 years old—past the typical marriageable age—but still single. After a series of broken engagements for various reasons, she realizes she has no luck with men and instead finds joy in her life through “herbal research.” When her research paper gains recognition, Mia decides to live as a teacher at the Royal Academy. However, one day, after seeing the Second Prince Lucilius at the academy, her body begins to burn with heat――…and on her chest appears a mark, the proof of being the prince’s destined mate!?