My Stepbrother Despises Me. Or So I Thought! Now He’s My Knight?!

The daughter of a duke, Willemina, was unkind to her foster brother, Nigel, whom she unexpectedly received, believing him to be her father's 'illegitimate son.' Over time, she starts to accept her foster brother, yet she struggles to apologize for her past behavior for many years. When she finally comes to terms with her feelings, her foster brother becomes a knight-at-arms, but the reality is not as it appears.