Overview: It's time to reveal the real mask of that mysterious man👀. What did he write in that letter?
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First Air Date: Dec 23, 2020Last Air date: Jan 21, 2021Season: 1 SeasonEpisode: 10 EpisodeRuntime: 48 minutesQuality: HDIMDb: 3.70 / 10 by 6 usersPopularity: 4.39Language: Korean