[Photos] New Behind-the-scene Stills Added for the Upcoming Korean Drama 'Happy Battle'

New behind-the-scene stills added for the upcoming Korean drama "Happy Battle", Happy Battle, Cha Ye-ryun, Jin Seo-yeon, Joo Young-ha, Kim Yoon-cheol, Lee El, Moon Hee-kyung, Park Hyo-joo, Woo Jung-won

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Kim Yoon Cheol ,Lee El ,Jin Seo Yeon , ,Cha Ye Ryun ,Park Hyo Joo ,Woo Jung Won ,Moon Hee Kyung ,