From Abandoned Lady to Beloved Queen

Anya, a noblewoman who was once engaged to the Second Prince, is suddenly rejected when he declares that their engagement is over. Her family sides against her, forcing her into confinement and leaving her completely isolated. Just when she believes her life has fallen apart, her childhood friend Rick returns. He is no longer the boy she remembers—he has grown into a handsome and influential man. Their reunion changes Anya's destiny. What initially looks like a story about a discarded noblewoman gradually becomes a Cinderella-style romance, as Anya discovers that she is deeply cherished by a powerful man from a neighboring kingdom. The story follows her transformation from a rejected and isolated noblewoman into a woman destined to become the queen of a great kingdom, with plenty of devotion, romance, misunderstandings, and royal intrigue.

https://www.cmoa.jp/title/295390/