Koisuru Ouji to Junan no Himegimi(2011)

Koisuru Ouji to Junan no Himegimi

Mira, a young soldier, is troubled by a number of things. The reason is that Alexis, the prince of a powerful nation, who she is visiting secretly, has taken an unusual liking to her! At first, she pretends not to notice, but the prince's behavior escalates! Is he really serious when he asks her to take a bath with him? He even uncovers a secret from her past that even Mira didn't know about...!?

(Source: Kadokawa, translated)