The iDOLM@STER.KR Guest cast, played by Lee Ga Eun Episode 1x01: Episode 1 (Apr 28, 2017) Episode 1x02: Episode 2 (May 5, 2017) Episode 1x06: Episode 6 (Jun 2, 2017) Episode 1x07: Episode 7 (Jun 9, 2017)