Yoon Doojoon, the mighty leader of CUBE Entertainment's B2ST, was busy replying to fan messages when one fan's message caught his attention..

Annyeong Oppa! I followed you on twitter! Why not make a facebook account? (:

FACEBOOK. He's been hearing that website from his fans for weeks now. What's so big about that website that his foreign fans always suggest it to them? Today, he decides to find out. 

As soon as he pressed "Enter" a website appeared. It's homepage was pretty simple, nothing interesting. The color blue surrounded it, just like how light blue was everywhere in Twitter. It's time for the moment of truth. He wants to end the curiosity now...

Starting that day, the Facebook craze in United Cube started...