Sakurai, Y: My Sister Took My Fiancé and Now I'm Being Court

A shojo/josei fantasy romance about a scorned noblewoman and a lion of a prince!

Cordelia, daughter of a Countess, can't seem to get married–mostly because her little sister Priscilla keeps stealing the hearts of her suitors. Ready to resign herself to a spinster fate, Cordelia is surprised when a handsome man suddenly wants to court her: and he's a prince, no less! Prince Leonhardt, who possesses the power of a legendary lion, is a heavily admired man but has his own quirks, such as pursuing Cordelia because he was drawn to her...scent. How cat-like is this man, really?! A fun (and slightly furry) fantasy romance!