RULE NUMBER 1: Do NOT take him with you. Cha Haseon has been having the same dream every Saturday night for five months. Every time she sees a tall boy with tousled black hair and a thick black ring piercing his bottom lip. He stares at her through a thick cloud of smoke and whispers something; words she cannot hear no matter how hard she strains. Each time she calls out, but her voice never reaches him. His eyes glow with curiosity and