ASTRO OK! Ready Main cast, played by Yoon San Ha Episode 1x01: Episode 1 (Jan 21, 2016) Episode 1x02: Episode 2 (Jan 28, 2016) Episode 1x03: Episode 3 (Feb 4, 2016) Episode 1x04: Episode 4 (Feb 11, 2016) Episode 1x05: Episode 5 (Feb 18, 2016)
