Chae Seo Jin is the stage name of Kim Go Un, a South Korean actress. Born on April 30, 1994, she made her acting debut as a child actress in the 2006 television drama “Over the Rainbow.” She then took on a role in the 2011 musical “Catch a Timid Man” before appearing in a number of films starting in 2014, including “My Brilliant Life” (2014), “Overman” (2015) and “Will You Be There?” (2016).