I Want to Escape from Princess Lessons manga volume 1 features story by Izumi Sawano and art by Uri Sugata.

Leticia Dorman is living every girl's dream—she's the daughter of a duke who's grown up in the lap of luxury and she's engaged to be married to none other than the ruggedly handsome crown prince, Clarke. But if this is a dream, somebody wake her up! In preparation to become part of the royal family, Lettie has endured ten painful years of lessons on everything from dancing to etiquette. And once she becomes queen, the she'll have to put it all into practice. Her only chance of escape lies in the prince breaking off their engagement, which seems unlikely…until he shows up at a royal ball with a mysterious woman on his arm. This could be Lettie's chance to break free once and for all, but not if Prince Clarke has anything to say about it!