逃がした魚は大きかったが釣りあげた魚が大きすぎた件

Maria 'Mimi' Annovazzi, martial-arts prodigy and youngest daughter of a legendary ducal house, is raised as the heir until a baby brother's birth strips her of the role and leaves her scrambling to marry well. With no suitors left at home, she transfers to a neighboring kingdom, where a prince she has never met publicly dumps her at graduation over an engagement she didn't know existed. A fantasy rom-com based on the light novels.