Ask for the name of a romance novel

Uh, I watched it a long time ago = = The female lead was a little cold, and the male lead was a gang leader. It seemed that the female protagonist went to a bar with her friends and happened to be involved in a gang fight in the bar. The female protagonist was involved and the minor character was killed. The female protagonist was not afraid at all. Instead, she looked at the dead person who grabbed her hair with disgust. The male lead was attracted by this unique temperament and liked her, balabala…
En, I still remember, the two of them were in the bathroom, I don't know if it was the saunas, having sex = =
It was a book in a series. The female protagonist had a few good friends. In the other books, she was also with a few gangsters.
Please, please ~~
I hope you can help me find this novel ~~
Those who don't know, please don't answer useless words
If there's no answer, I'll choose the one without a satisfactory answer
I thought of another book in the same series
The female lead was a fashion designer, and the male lead was from the underworld. The two of them could be considered childhood sweethearts. Then, the male lead had a very important necklace. The female lead took the opportunity to go to a fashion show and said that she wanted to borrow the necklace as an ornament. Anyway, the two of them were happy after that…
That series has four stories ~~

Answer 1

The name of this romance novel was " Reborn Beauty ".