Kim Hyun showed off his special presence from the first appearance of The Youngest Son of a Conglomerate'. Actor Kim Hyun is the wife of Lee Sung-min and Song Joong-ki in the JTBC drama The Youngest Son of a Conglomerate' (directed by Jeong Dae-yoon / playwright Kim Tae-hee) It appeared as Grandma's Boy 'Lee Pil-ok' and played a hot performance. Kim Hyun, who appeared as a neat head on the day, saw his husband who was cold to his third son, Jin Yoon-ki (Kim Young-jae), who attended the ceremony to celebrate Jin Yang-chul's sermon and birthday, and said to Jin Yoon-ki, "Do not keep it in mind." Lee Pil-ok, who headed to the parlor with Jin Yang-cheol, said, "Do you have a book even after you have kicked out your son and grandson who came to my house in ten years?" Then, when the news that the plane that Jin Yang-cheol was expected to have exploded was heard, Lee was shocked and shook his body. Fortunately, Jin Yang-chul, who arrived in Seoul on another flight, opened the front door and Lee Pil-ok seemed relieved. Kim Hyun's delicate emotional performance increased the audience's immersion. In The Youngest Son of a Conglomerate', Kim Hyun perfectly depicts the character 'Lee Pil-ok', a gentle yet decisive character, and proved his unique presence in every scene.