Main Characters Seok Ji Won 12 main appearances Yoon Ji Won 12 main appearances Cha Ji Hye 12 main appearances Kong Moon Soo 12 main appearances
Recurring Guest Characters Yoon Jae Ho 12 guest appearances Maeng Soo A 12 guest appearances Seok Ji Won (high-school days) 11 guest appearances Yoon Ji Won (high-school days) 11 guest appearances Seok Gyeong Tae 10 guest appearances Lee Ki Ha 7 guest appearances Han Young Eun 6 guest appearances Park Dong Jin 1 guest appearances Yoo Hong Jae 1 guest appearances