Guest Stars Taecyeon as Friend #1 Lee Il Hwa as Kim Mi Kyung Park Ha Na as Son Ji Ah Lee Sang Yub as Kang Sung Min Song Yoon Ah as Professor Song Jung Hee Tae as Doctor Im Ji Kyu as Kim Young Chul Kim Myung Soo as Yoon Young Ha Son Yeo Eun as Yoon Se Jung