"Yejiiii.... Hwang Yeji!!! Where are you?" Lia run to all of the building in this school
"Chaeryoung Yuna, do you know where is Yeji?" 
"Yeji? I don't know the girl named Yeji" 
"A girl who came with me in the prom night, my classmate"
"Lia Lia...... You came alone Lia, I know all of your classmate, and no one named Yeji"
"You refuse to come with Ryujin but you ended up coming to Prom night alone Lia"

Why all of them said never know about Yeji
Deg....
Yeji is not real?? Yeji is not a human??