Amagaya Chiaki manga
From MangaHelpers: Where there are people, there is drama and troubles to be solved. Marnie's father works as a detective to solve problems created between people, whether they are marriage issues or murder cases. Just like her father, Marnie also solves cases as long as the price is right. She usually lives as a normal student, sleeping through her classes, but once a client asks for her help, she will stop at nothing to solve the mystery laid before her. [DrCoke]
Five years ago, Helen lost her sight, hearing, and ability to speak in a traffic accident. She was living peacefully with her uncle and her guide dog Victor until, one day, she awoke to her mysterious powers.
There is a Gothic-style mansion in a distant, rarely-visited part of Japan. There, the world's greatest surgeon, Naomitsu Madaraki, once lived. But he hasn't come home in ages. Instead, the professor's "daughter", Fran Madaraki, lives there with a large amount of her own ghoulish creations and her "younger sister" Veronica. She's a very unusual girl, what with the stitch patterns on her face and the giant bolts on either side of her head. Just as skilled at surgery as her father, and if you're willing to pay her price, she can do everything up to and including raising the dead. Fran believes that a life should be saved no matter the cost, and keep that in mind, since the results of her surgeries are rarely (if ever) pretty.
The human race has been infected by a strain of bacteria that was originally isolated in South America but has spread all over the world. The symptoms start with fever and vomit and eventually ends with the person in a coma. However, those who awake from that coma are those with incredible intelligence and they're soon able to see that they are in fact being ruled by higher beings that they thought only existed in fairy tales like demons and witches. Arthur Pyuty was a witch who ruled a kingdom under the guise of a human until the side effects of the bacteria revealed her true nature to humans and they started revolting. In fact, Arthur and her kind, who used to hold high political power in society, are now being hunted down. Arthur and her assistant Ataru, a zombie, must move from place to place in order to avoid humans but also so that they can find a way to make things go back to how it was before.