You aka Kim Jaeyun was born in a powerful family, Your mother Valery, Your brother Yuno, Your lover irina and Your unnie big sister Riotte and you were part of this family.

One day, everything changed.

After Valery uses his spell. There it was, you feel pain throughout your body, you see your party sees you with amusement in their eyes. Your lover, Irina too... "I want you to make me your bride, Kim Jaeyun.". It was a lie. All is a lie... The party you see as a family. Gone... They sees you as a sacrifice. The priest Irina, Valery the sage, the hero Yuno, the vanguard Riotte... Has betrayed you

Yuno : We decided to sacrifice you to strengthen the hero, Me.

Irina : Sorry Kim Jaeyun... clings to Yuno

Riotte : You're the sacrifice... Since, you're the youngest among all of us.

Valery : Don't say sorry, Irina. Why should you say sorry to a kid like him? There you are, kneeling on the ground, feeling all the pain. Seeing your own family betrayed you.