Oh Sehun is always gloomy.   Xi Luhan is always melancholic.  

  Luhan loved flowers and it's the reason why he fell for Sehun. When they became best of friends, he faced the doubts of either to confess his feelings or not. The time came that the decision depended on a single flower, a blue rose.

Byun Baekhyun was secretly admiring Park Chanyeol. It was too deep that he couldn't even let anyone come inside his heart. Too much that he even hurt himself.