Kwon Yuri:

Innocent, caring and sweet. Ever since she was born, Yuri grew up in a happy, healthy family and knew nothing but peace and kindness. Never had she been bullied or heartbroken or seriously injured. To Yuri, the world was a place of serenity and safety.

Choi Minho:

Heartless, cold and rude. Since he was young, Minho was exposed to the dangers of the world. His father cheated and his mother was a e, and his parents had abused him. Minho was bullied, injured and scarred for life. To Minho, the world was a place of tragedy and danger.