Tale of the Nine Tailed 1938

Season 1, Episode 10: Chapter 10: Shinigami Mercenaries

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In the painting at Bando Hotel, Room 404, the three mountain gods face Ushiuchibo. At the snap of his finger, Hong-joo and Moo-yeong vomit blood. Lee Yeon searches for an antidote in the woods when he encounters an injured old man. The old man turns out to be Onyudo, a mercenary. As black smoke emerges from his mouth, something unbelievable happens. They switch bodies!