Yoon Seolhyun [you]
-15 years old
-somewhat nerd
-kind
-sometimes cold
-cute
-peacefull
-nature lover
Lee Minhyung/Mark Lee
-15 years old
-bad boy
-feeling innocent guy
-newbie of the serial killer gang
-feeling nerd
-lazy
-famous school bully
Yoon Sohee
-20 years old
-[Seolhyun] your sister
-kind
-cold
-smart
-protective
-clever
Johnny Seo
-19 years old
-badboy
-bully
-serial killer
-tall guy
Lee Taeyong
-19 years old
-assistant leader of the gang
-the most trusted serial killer
-famous bully
Yuta Nakamoto
-19 years old
-japanese member of the gang
-playboy
-bully
-serial killer
-cold-hearted
Moon Taeil
-20 years old
-2nd assistant leader of the gang
-serial killer
-bully
Jeon Jungkook
-17 years old
-bully
-playboy
-serial killer
Kim Taehyung
-19 years old
-best killer
-bully
-cold-hearted
-doesn't have any mercy
Park Jimin
-19 years old
-serial killer
-bully
-playboy
-acting innocent as always