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Lee Jooheon - A world-famous rapper and music producer. Owner of the largest record company in Seoul. Arrogant, insolent and haughty at the same time damn handsome, and he wraps his problems with alcohol and casual sex.

Im Chankyun - Single father. A songwriter at Hyong Entertainment. Always smiling, willing to help and open to people. After the death of his girlfriend, he raises a five-year-old son himself. However, when fate starts laughing at him again, his friend will come to help him.