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Appearances
Hatch
Guest cast, played by An Seung Gyun
- Episode 1x01: The Lowly Prince (Feb 11, 2019)
- Episode 1x02: The Death Ledger (Feb 11, 2019)
- Episode 1x03: Yeo Ji Meets Prince Yeoning (Feb 12, 2019)
- Episode 1x04: Welcome Back, Prince Yeoning! (Feb 12, 2019)
- Episode 1x05: Prince Mil Poong, You're Under Arrest! (Feb 18, 2019)
- Episode 1x06: King Sukjong's Secret (Feb 18, 2019)
- Episode 1x07: I Can't Do This (Feb 19, 2019)
- Episode 1x08: Your Majesty! (Feb 19, 2019)
- Episode 1x09: Gyeongjong Era (Feb 25, 2019)
- Episode 1x10: Prince Mil Poong is Back (Feb 25, 2019)