Ask for the name of a romance novel

The male lead was a doctor, who seemed to be a dental practitioner. The female lead was underage and seemed to have met each other after being hit by the male lead's car on the street. The female lead was very bold and quick-witted. She was once teased by gangsters on the street. She took out a bloody sanitary pad from her body. Of course, she was not using it, but she carried it with her for self-defense. Later, because of her grandmother's medical expenses, she agreed to the male lead's proposal of being a mistress. The male lead paid for her education and patiently waited for her to reach adulthood.

Answer 1

The name of this romance novel was " Spring Banquet ".