Gu Yan is a master of mathematics and is obsessed with studying. He doesn't know that his high school classmate Fang Yu has been secretly in love with him for more than ten years. Fang Yu seemed like a good girl, but she made a crazy decision in her life. This time Fang Yu finally slept with him at the class reunion, and the two became a couple living together for a month. At the end of a month, will they still be together? Will this relationship that started out wrong end well? The male and female protagonists are both clean.
Purpose: A widowed king earns a Ph. D. And then falls in love