Guest Stars Yoo Oh Sung as Teacher Seo Ji Hoon as Jo Tae Woong Lee Ji Hoon as Kang Chan Jun Hyun Moo as Uncle Kim Jin Woo as Seo Jae Woo Choi Sung Min as Kim Min Soo Kim Joon Pyo as Kim Joon Pyo Son Dong Hwa as Son Dong Hwa