Episode 4 S01 E04

Park Shin-hye (as Kang Bit-na) Kim Jae-young (as Han Da-on) Kim Ah-young (as Lee Ah-rong) Kim In-kwon (as Koo Man-do) Kim Hye-hwa (as Kim So-young) Kim Ji-hoon (as Park Dong-hun) Park Ji-hoon (as Ko Eun-seop) Kim Jae-hwa (as Jung Myeong-suk) Kim Yeong-ok (as O Mi-ja) Park Ji-yeon (as Yoo Jung-im) Oh Han-kyul (as Yoo Min-jun) Kim Hong-pa (as Jeong Jae-geol) Lee Kyu-han (as Jeong Tae-gyu) Choi Dong-goo (as Jeong Seon-ho) Han Sang-jin (as Ju Hyeong-suk) Lee Ga-yeon (as Ju Da-hui) Ha Kyoung-min (as Moon Dong-ju) Lee Jung-ok (as Kim Jae-hyun) Lee Mi-do (as Seo Hwa-sun) Kim Kwang-kyu (as An Dae-yong) Do Eun-ha (as Choi Won-gyeong) Jeong Seok-yong (as Yoo Hong-cheol)