The Holy Emperor Was Secretly an Absolutely Insatiable Man

“The night is only just beginning, Miyako.”

Miyako, a Japanese woman who ended up transported to another world, has been living quiet, peaceful days as an apothecary under the name “Mia.”
But one day, at the entrance of the brothel she visits for house calls, she finds a huge man down on his hands and knees in apology—apparently he’s so insatiable that he’s on the verge of being banned.

Miyako herself has been suffering from a troublesome condition caused by this world’s miasma, and in order to help him rein in his raging desire, she asks to share a bed with him.
Then, when Mia is summoned to the imperial castle, she spots a familiar face in the audience chamber—and…

https://www.cmoa.jp/title/342585/vol/2/