Main Characters Umji 5 main appearances Yerin 5 main appearances Yuju 5 main appearances Eunha 5 main appearances SinB 5 main appearances Sowon 5 main appearances Eric Nam 4 main appearances Song Yu Vin 4 main appearances Sam Kim 4 main appearances Joon Park 4 main appearances Danny Ahn 4 main appearances Otani Ryohei 4 main appearances Lee Teuk 4 main appearances Kim Ryeo Wook 4 main appearances Jang Hyuk 4 main appearances Shin Seung Hwan 4 main appearances Choi Ki Sub 4 main appearances Yoon Se Ah 4 main appearances Shin Da Eun 4 main appearances Park Ran 4 main appearances Ha Suk Jin 4 main appearances Lee Jae Yoon 4 main appearances Yoo Ha Joon 4 main appearances Lee Jung Jin 3 main appearances Ko Tae Yong 3 main appearances Kang Dong Jun 3 main appearances Lee Ki Woo 3 main appearances Hyun Woo 3 main appearances Seo Ha Joon 3 main appearances