I Want to Escape from Princess Lessons manga volume 3 features story by Izumi Sawano and art by Uri Sugata.

Having finally married Prince Clarke, Lettie is now a princess for real! And the next step in their royal relationship is a romantic honeymoon in the neighboring kingdom of Delbaran.

Thankfully, Lettie has an entourage in tow that includes her older brother, Nadir, Delbaran's prince, Louis (and his servant), and her rival-turned-bestie, Brie. But Brie is acting awfully strange - for one thing, she seems to have developed a soft spot for Nadir. And for another, she's doing everything in her power to get Lettie some alone time with Clarke! If absence makes the heart grow fonder, what the heck will closeness do for the newlyweds?