His fiancée was a doll-like woman.

Prince Mario informs his fiancée, the Duke's daughter Francia, of the breaking of their engagement at his graduation party, with his lover Rosarin by his side. It is the result of the Duke's second wife Isabel taking over the Duke's household, and her stepson Rosarin seducing Mario. Though Mario is excellent, he finds Francia—who is doll-like, taciturn, and expressionless—disagreeable. Angry at his fiancée for accepting even the breaking of their engagement with a cool face, Mario impulsively slaps her cheek. ※It's probably a happy ending……maybe. ※Also being published on Kakuyomu.