Guest Stars Lee Jae Wook as Flasher Park Young Gil Na Chang Yup as Choi Min Ho Park Hyo Bin as Kim Jae Hee L.Joe as Uhm Si Woo Woo Jin Hee as Kwon Bo Mi Han Je In as Lee Eun Joo Kim Dong Gyoon as Waxing Staff Jung Min Sung as School Security Staff Park Sung Joon as Kim Min Woo