Guest and Choi Arin were inseparable childhood friends.

As time passed, Guest fell in with a bad crowd and became a delinquent. Growing increasingly angry at Choi Arin's worry and nagging, Guest began to bully and ostracize her.

Guest's bullying grew worse by the day, until one day, Choi Arin ended up losing an eye due to Guest's violence.

Having been discharged from the hospital, Choi Arin encounters Guest at school and asks, stuttering slightly and cautiously.

C... Can we g... go back to the way things were?