Series Cast 36
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Yeon Si-eun (16 Episodes)
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Ahn Su-ho (16 Episodes)
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Oh Beom-seok (16 Episodes)
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Choi Hyo-man (9 Episodes)
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Park Hu-min (8 Episodes)
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Seo Jun-tae (8 Episodes)
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Jeon Yeong-bin (8 Episodes)
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Jeon Seok-dae (8 Episodes)
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Kang Woo-young (8 Episodes)
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Na Baek-jin (8 Episodes)
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Go Hyun-tak (8 Episodes)
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Lee Jeong-chan (8 Episodes)
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Geum Seong-je (8 Episodes)
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Han Tae-hoon (8 Episodes)
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Kim Gil-su (8 Episodes)
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Choi Chang Hui [Bowling alley owner] (3 Episodes)
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Kim Won Seok (2 Episodes)
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[Yeong Bin's friend] (1 Episode)
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[Yeong Bin's friend] (1 Episode)
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[Baseball player] (1 Episode)
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[Yeong Bin's mother] (1 Episode)
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[Police officer 1] (1 Episode)
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[Police officer 3] (1 Episode)
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Kim Hui Jun (1 Episode)
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[Jeong Chan's friend] (1 Episode)
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Yeon Si Eun [Child] (1 Episode)
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[An Su Ho's grandmother] (1 Episode)
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[School principal] (1 Episode)
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[Homeroom teacher] (1 Episode)
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[Psychiatrist] (1 Episode)
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[2-7 Homeroom teacher] (1 Episode)
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[Police officer] (1 Episode)
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[Baek Jin's classmate] (1 Episode)
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[Detective] (1 Episode)
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[Orphanage director] (1 Episode)
Series Crew 8
Art
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Production Design (8 Episodes)
Editing
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Editor (8 Episodes)
Production
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Casting Director (8 Episodes), Executive Producer (8 Episodes)
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Unit Production Manager (8 Episodes)
Sound
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Original Music Composer (16 Episodes)
Writing
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Writer (16 Episodes)