What is Yin Xiuwan’s name during the breakup?

In the movie "We Are Breaking Up Now", Yin Soo-wan plays the role of Jang Ki-yong.

In the film, Yoon Soo-wan is Yoon Jae-guk's deceased brother and Ha Young-eun's boyfriend ten years ago, but they did not have a happy ending. Because Yin Xiuwan was in a car accident, both Yin Xiuwan and Shen Youqing lost their minds in the heavy rain, and Shen Youqing also drove and chased Yin Xiuwan and died.

Plot introduction:

Ha Eun-young, the head of the design team of fashion company THE ONE, is a calm, capable and realistic strong woman. She feels that men are just things that stimulate her and give her nervousness. They don't take relationships seriously and give everything seriously. And when she met Yin Zaiguo, a freelance photographer who was popular in the industry, she had a romantic sibling encounter with him.

Ha Young-eun, although her biological age is 38 years old, as a designer for a clothing company, she is also very sensitive to trends. A calm realist, a young, beautiful, and sensual woman. Work and love are both professional. One day, I met Yoon Jae-guk at a blind date party in place of Hwang Chi-sook. He asserted that there would be no more wavering things and changed his mind.