Summary: Treacherous Romance , 배신 주의 로맨스 , BetrayaIism Romance
Bae Shinju, Jang Maro, Yoo Hana, and Cho Jihoon, who have been close friends since elementary school, one day in the 2nd year of High School, Maro confesses to Shinju. Shinju refuses to confess for the sake of friendships with her friends, but… On that very day, Jihoon and Hana started dating…! This is a betrayal..! A Betrayal! A Romance of Caution.