In "Heard it Through the Grapevine" Yoo Joon Sang got into a fist fight with Jang Hyun Sung. He was upset that a clump of his hair was pulled out and even thought about hair implants, which drew laughter.

On the 7th episode of SBS Monday/Tuesday drama "Heard it Through the Grapevine (script Jung Sung Joo, director Ahn Pan Suk) broadcast on Mar. 16th, Han Jung Ho (played by Yoo Joon Sang) had a fight with Suh Hyung Shik (played by Jang Hyun Sung) over statements made at dinner. They got into a physical fight and Jung Ho was distraught looking at all the hair that he had lost.

Han Jung Ho said to the secretaries, "There is no more respect any more. I don't need to understanding to empathize anymore and things need to be direct and said in simple terms. Ask them what they're needing the most," he ordered. The secretaries asked whether it was possible and he tried to suppress his anger. He said, "A part of my body was vandalized. It might not be recuperated."

With this, Han Jung Ho took pictures of his scalp and was devastated as he started searching about possibilities for hair implants. To the secretary that suggested professional surgery, he said, "I'm weak on pain. I'll think about it for a day," he said.