Yoon Park is becoming the "national first born child."

Recently, actor Yoon Park is becoming popular. He is playing the role of "Cha Kang Jae" in the drama KBS "What's With this Family" as a firstborn child and an expert of liver cancer. In his personal life, he is showing sides of being a good son, brother, and husband as he is attracting the attention of viewers.

In the drama, Cha Kang Jae (played by Yoon Park) is looking into the illness of his father Cha Soon Bong (played by Yoo Dong Geun). He is the dependable child for his father who is ill and is trying to be a trustworthy son who is trying new methods as well.

Meanwhile, Kang Jae is taking care of his immature younger sibling Cha Dahl Bong (played by Park Hyung Shik) and is also comforting his older sister who is worried about her father's health. With this, he is showing the dependable sides of the eldest son.

In addition, he is also caring for his in-laws. To Kwon Ki Chan (played by Kim Il Woo) and Huh Ang Geun (played by Kyun Miri), his in-laws, he prepares dinner and is always comforting his wife Kwon Hyo Jin (played by Son Dam Bi) as he is the most loving father as well.