Unfinished Story

Lee Jong-suk

Kang Cheol

Han Hyo-joo

Oh Yeon-joo

Jung Yoo-jin

Yoon So-hee

Lee Tae-hwan

Seo Do-yoon

Lee Si-eon

Park Soo-bong

Park Won-sang

Han Cheol-ho

Kim Eui-sung

Oh Sung-moo

Kang Ki-young

Kang Seok-beom

Heo Jeong-do

Park Min-soo

Cha Kwang-soo

Son Hyun-suk

Nam Kee-ae

Kil Soo-sun

Ryu Hye-rin

Sun-mi

Ryu Hye-Rin

Sun Mi [Sung Moo's subordinate]

Yang Hye-ji

Yoon Hee [Sung Moo's subordinate]

Park Choong-seon

Kang Chul's Father