Konyaku Haki 23-kai no Reiketsu Kikoushi wa Inaka no Ponkotsu Reijou ni Furimawasareru

Adonis, the only son of a marquis, is a sparkling nobleman with a good face, a good head, and a good family background. However, because of his bad character, his engagement was broken 23 times. In order to avoid any more broken engagements, he dares to choose a poor country noblewoman as his 24th partner. Ophelia is a clumsy girl beyond imagination, and she becomes an irreplaceable person for everyone despite her repeated failures. Before long, she takes up residence in the heart of even the stubborn Adonis... Source: MU