A simple love story about a guy and a girl who never believe they would be a match for each other. 

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She is a very simple person. Not the prettiest, not the tallest and neither the slimmest. She is Lee Haerin, the girl who moved to Seoul alone to study high school, to pursue a good future. Getting into a relationship was not her main objective, that being said, she had been single ever since. She had never been serious about getting into a relationship.

Not until the day she fell in the park when looked at this guy. She thought it was just a simple fall. Never had she thought, by her falling for him will have her fall for him, literally. 

He is a very talented guy. One of the best looking, tallest and one of the fitter guy. He is Park Chanyeol, the guy who dropped out on his last year of university to pursue his dream. Since university started, his focus was only on his passion and studies. He had never been serious about getting into a relationship. 

Not until he met this girl who fell in front of him. He thought he was just giving a helping hand. Never had he thought a simple help of his will lead him into something he never expected. 

What's gonna happen when two of them crosses each other's path?