Shuri

She has a graceful manner and behaves politely to everyone.

However, she will not hesitate to put the hero or heroines through any ordeal or humiliation if her mistress commands it.
The mistress seems to place her complete trust in her, and she often moves with just one word, "Shuri.
She has also been trained by her master in the art of service, and her "punishment" of the hero, who is a man, is carried out without mercy, making full use of her advanced skills.