The film is legendary for its massive roster of actors portraying the single character of Woo-jin. While provides the emotional anchor as Yi-soo, over 20 well-known actors take turns playing her ever-changing lover. Notable For Han Hyo-joo W: Two Worlds , Moving Park Seo-joon Itaewon Class , The Marvels Lee Dong-wook Goblin , Tale of the Nine Tailed Park Shin-hye The Heirs , Doctors Lee Jin-wook Sweet Home , Voice Seo Kang-joon Cheese in the Trap Chun Woo-hee The Wailing Themes: Is Love Skin Deep?