Abyss

Park Bo-young

Go Se-yeon / Lee Mi-do

Ahn Hyo-seop

Cha-min

이성재

Oh Young-cheol

이시언

Park Dong-cheol

Song Sang-eun

Lee Mi-do

한소희

Jang Hee-jin

Kwon Soo-hyun

Seo Ji-wook

윤유선

Eom Ae-ran

박성연

Park Mi-soon

이철민

Park Ki-man

김사랑

Go Se-yeon

안세하

Cha-min

예서

Young Jang Hee-jin

하성광

Go Chang Soo [Se Yeon's father]