The Illegitimate Flame: Bride of Ashes - Chapter 16- rule

“Future Occupation…Demon King.”

Sai Akuto enters Constant Magic Academy to be useful to society and to become a top-ranked national magician. However, a horrible prediction is made on his first day. Thanks to this prediction, the class representative girl hates him, a girl with a mysterious power embraces him, a female artificial human is sent by the empire to observe him, and his school life is otherwise thrown into chaos…

Ming Luo is a wasted daughter of the Duke Yi’s household. Her father forced her to study medicine but it was not a wise choice since she was of no use. Her sister from a different mother uses underhanded schemes to get rid of her. Out of guilt and frustration, she tries to commit suicide. Everyone thought she was going to die but she miraculously woke up.

Xie Jin is an international student studying in the United States. Because of an accident, he obtained a special ability that allows him to detect the attributes of all objects within a certain range. Because of this ability, he started from panning for gold and gradually went to the country of Bald Eagle. The pinnacle of wealth. (No abuse, no depression, logical, straightforward and reasonable road to the rise of North American chaebols)

- Description from novelbuddy

A suffering MC novel—the main character must be forced to suffer, be oppressed until they’re hovering between life and death, dying and living here and there. They can have a golden finger, but before getting it they must pay the price. They can also have beautiful women, but all are snake and scorpion beauties, able to look at but not eat.