The actor debuted in 1999, and has been at Namoo Actors since 2010. The label said, "We only had good times with Ji Sung. The long time that we spent together was very meaningful. We talked deeply about his future plans, and decided to go in that direction together. We will do our best to make an environment where he can safely focus on acting, and we'll protect him so he can be an actor as well as a healthy, happy person."

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