Violent father Moo-jin, whose family is everything. Mother So-yeon left because she couldn't stand the violence. Hoon, who loves both his father and mother, is forced to make a choice and leaves, but eventually remains alone and enters his world.
as Hoon
as Mu-jin
as So-yeon
as Byeong-tae
as Gi-cheol
as Yeon-hee
as Teacher
as Math
as Byeong-tae's mother
