According to media outlet reports on July 21, DAY6's Wonpil has reportedly been offered the role of a student named Do Ye Suk, a character who becomes entangled with Kim Yeon Du (played by Lee Eun Jae). If cast, the production will mark Wonpil's first ever acting debut role.
Next, Kang Hye Won is in talks to play the role of a campus goddess at HwaYang University, Jin Se Hee. In order to get back with her ex-boyfriend Do Ye Suk, Jin Se Hee teams up with Ji Hyun Ho (played by Kang Yool). Finally, CIX's Hyunsuk has been offered the role of Kim Dae Young, Do Ye Suk's best friend and a bright, positive romantic.
Meanwhile, the same production staff of 'Best Mistake' seasons 1 and 2 will be returning to work with Lee Eun Jae, Kang Yool, and more for the brand new 3rd season of 'Best Mistake'. The series will be set in college, dealing with all new troubles for the drama's beloved characters.