Title/Other Titles: Ruler – Master of the Mask ; Emperor: Owner of the Mask No. of Episodes: 40 episodes (30 minutes each) Network: MBC Cast  Yoo Seung-Ho as Crown Prince Lee Sun  Kim So-hyun as Han Ga Eun  Infinite’s L as Commoner Lee Sun  Yoon So-hee as Kim Hwa-gun  Heo Joon-ho as Kim Dae-mok… Read More Ruler – Master of the Mask | 2017