Meek & Hopeless Female MC

https://bellereservoir.com/novel/a-kind-goblins-bird/
This is 'A Kind Goblin’s Bird' matured novel

https://comiko.net/series/81497
This is 'A Kind Goblin’s Bird' manhwa matured version

Historical Korean setting

Historical Korean setting
Emperor Servant

Ray and her older brother Hayes are driven out of their home as their household falls apart. Hoping to find shelter, they arrive at an ominous castle covered in blo*** red roses located in the middle of nowhere. This is where Ray meets the castle's mysterious host Clodan dark, beasty man possessing dangerous charm and even more deadly secrets. Within the enclosed walls of a remote castle, there is no reason or logic left as Clodan desires innocent Ray.

There are rules that must be followed in this mansion, Never see, hear, or know the existence of the “Secret Corridor” and its manager. Hired in a mysterious mansion, Maid Ashe meets the hidden master of the mansion, Tristan, who has lived alone in the basement. The two, who were shunned around, continue to covet each other in the secret room…

The love story of the Tiger Dohwi and the Red Fox Sohwa – a love that transcends tribes.
Sohwa, a red fox, was born a lone mutant with white fur, setting her apart from her tribe, and leading her to live a lonely existence. One day, she encounters an abandoned wildcat, Dohwi, in the mountains and rescues him, beginning their life together.
“Dohwi! Since we are of different species, there’s no need for attraction between us. You are gentle and kind; I think we can live together.

She's not dumb or even hopeless but she's innocent and fucking cute. So I'll put this here

Noble man x Maid