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Soobin is a really soft boy and Yeonjun known as bad boy at school was a really good friend. Everyone still wondering how can they be a good friend?
Things were going so well with their so called "Friendship" for 16 years. They know each other since were just a little and have been a good friend since then. Maybe thats why they get along so well. BUT not until they beautiful friendship broke and started to get wrong.

Yeonjun is the murderer.