Ki Sun Kyum is a fictional character from the South Korean television series titled "Our Beloved Summer." He is portrayed as a talented and passionate young man who has a deep interest in documentary filmmaking. His character is known for his charming personality and complex emotions, which resonate with viewers. In the series, Ki Sun Kyum reunites with his high school sweetheart, Choi Ung, after a documentary they filmed together gains unexpected popularity. This rekindles their past relationship and explores themes of love, ambition, and personal growth, making the show relatable and engaging for its audience.