By a Twist of Fate, I'm Attending the Royal Academy in Disguise Vol. 2

Undercover Love Uncovered!
Cesia has been ordered to go undercover to investigate the suspicious princess of a neighboring country, Juliette. Disguised as the princess’s maid, she has to carry out all sorts of unreasonable requests while simultaneously dealing with the pain of knowing that Juliette is Marcus’s fiancée. As she shuts away her love for Marcus and performs her duties, one day, she falls for Juliette’s trap and is almost driven out of the kingdom. Nobody believes her, and she goes into hiding—until, that is, Marcus appears.
She wants him to protect her, but she also wants to be strong enough to help him. More than anything, she wants to be with him on equal terms. But in the end, will she be able to crawl her way up from being a fugitive from the law all the way to Marcus’s side?

[From Cross Infinite World]