The music video for "I Understand, I'm Sorry" sung by Lim Young Woong has surpassed 9 million views on YouTube. This music video was released last December on Lim Young Woong's official YouTube channel, 'Lim Young Woong'. Since its release, it has received steady attention from the public and fans. Lim Young Woong was recognized for delicately expressing the emotions of a man experiencing the pain of a breakup. Lim Young Woong plans to continue various activities this year as well.