In "Bluebird House" Lee Sang Yeop apologized to Lee Joon Hyuk for taking the blame for him regarding the company loss..

On the 9th episode of KBS 2TV "Bluebird House" (script Choi Hyun Kyung, director Ji Byung Hyun), Hyun Do (played by Lee Sang Yeop) that the person who was responsible for all problems was not his friend. He learned from his father that he himself was the one who was at the core of the problems. With that, Lee Sang Yeop decided to take action and apologize.

On this day, Jang Hyun Do appeared in front of the company personnel. He said, "Everything is my fault. It turns out that the printing for the pamphlet, I had done the final confirmation. Thus, I'll take all the responsibility."

Then, he said to Kim Ji Wan (played by Lee Joon Hyuk), "If I had known before I wouldn't have made a harm time for you. I'm so sorry." With that he apologized.

Meanwhile, "Bluebird House" is about the younger generation in modern day society who is going through troubles of unemployment, shattered dreams, and dealing with the stresses of reality. It also features the struggles of them and their parents in this societal commentary.