Seo Ha Joon vs Kang Yeon Doo Sassy Go Go발칙하게 고고 [Teaser][KBS2][Kdrama] Cast: -Jung Eun Ji as Kang Yeon Doo -Lee Won Geun as Kim Yeo -Cha .\rbr\rbrSassy Go Go발칙하게 고고 [Teaser][KBS2][Kdrama] Cast: -Jung Eun Ji as Kang Yeon Doo -Lee Won Geun as Kim Yeo -Cha Hak Yun as Ha Dong Jae -Chae .\rbr\rbr[FMV]Kang YeonDoo and Seo Ha Joon.발칙하게 고고[KBS2][Kdrama] From KBS drama Sassy Go Go.발칙하게 고고 Song: Shooting Star by Hanbyul (OST .\rbr\rbrPromotional poster Also known as Cheeky, Go Go Daringly, Go Go Insolently, Go Go Cheer Up! Genre Teen Romance Drama School Written by Yoon Soo-jung .