Study Group • Sæson 1 Skuespillere og folkene bag
Hong Min-giPark Geon-yeop Lee Jong-hyunKim Se-hyeon Yun Sang-jeongChoi Hee-won Lee Gwang-heeJeong Do-hoon Jeong Jae-seongvice-principal (Yu-seong Tech) Joo Yeon-wooKim Soon-cheol Cho Seung-yeondean of academic affairs (Yu-seong Tech) Jin Woo-jinKim Gyu-Jin [Disciplinary Committee member] Kim Min-ahHwang Mi-Hee (Yu-seong Tech) 
