character - Self - Mentor

character - Kim Nam-Joon

character - Do Gwang-Woo

character - Roman Lee

character - Lord Chang Won

character - Kim Sang Soo

character - Jin Yong-Suk

character - Park Doo-ho

character - Gyo-ki

character - Nam Joo Seung

character - Kang Hyung-Woo

character - Ran's Ex-lover

character - Bae Ji-Hoon

character - Shi-Hoo

character - Yeon-seong

character - Kang Se-ki

character - Min Tae-hyeon

character - Jung-dae

character - Young-eun

character - Yong Joon [Kyung Min's college friend]

character - Joon-ho, Kyung-min's college friend

character - Kim Soo-jin

character - South Korean Soldier