Wellmade STAR M ( Korean : 웰 메이드 스타엠 ) is South Korea 's brokerage firm . Founded in July 1976, including the motion picture investment production, film investments in production, artist management, concert singer planning, etc., in December the acquisition DreamT Entertainment owns Girl's Day 's brokerage firm, current artists, including actor Lee Jong-suk , Wu Yan book , Lee Joon-hyuk , Jin Ji-hee and several other actors.