Reitetsu Shougun no Atsu sugiru Ai ni Samugari Maid wa Tomadoi-chuu

Welcome to the inner palace, where only the most skilled and diligent maids are stationed to wait on the king's consorts and their children. Fina Scalchi is one such maid. The problem is that she despises the cold climate of the royal capital. She's managed to put up with the frigid temperatures for the past five years (with the help of aphrodisiacs), but she's had enough! So when she's finally offered an assignment in the warmer South, you can imagine how ecstatic she is. The caveat, however, is that she must work at the southern military fortress ruled by the "Stone Cold General," Silverio Orcagna. Despite her distaste for his arrogant demeanor, she remains the dutiful maid, impressing him with her dedication. Then one evening, when the general visits Fina's room, he mistakenly partakes in her precious aphrodisiac! Unable to bear the sight of him in his heated state, she aids him...in quelling his fervor. But as a result of their close-quarters contact, a sense of possessiveness begins to take hold of the general...! (Source: MangaPlaza)