"Jongin... Please don't give up on me. Because if you give up on me, I'm going to give up on me, too." 

Well who wouldn't want to be the boyfriend of the perfect Lee Hani? She's got the look, the brain and all the guys ever need. And there's Kim Jongin, or more commonly known as Kai. He was the only guy who loves to annoy her to the core. He was the only guy who kept on playing tricks and insulting her. Why did he do that?     "I've been always wanting to do this..."

Ahn Dami, a girl with a beautiful face but a lonely life. Her parents died when she was 18. Her grandfather took care of her since that. Her grandfather was the only one she had until he died when she was 23, leaving her alone in this cruel world. Just when she thought everyone was turning their backs on her, Jongin came. She started to open up and enjoy her life. Jongin teach her how to love. She loves Jongin. He was like an angel in the rain. Or that's what she thought so.