Lee Sungyeol used to have a crush on Nam Woohyun, the boy next next door.

At fifteen, he confessed and was cruelly turned down, breaking his heart. 

Then he went to study abroad and started to get over the boy he had fallen for as a kid.

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Nam Woohyun had never forgotten about Lee Sungyeol.

Then he turned up seven years later looking hotter than ever with a whole new attitude.

Now he has to come to terms with the fact that he is falling for the boy whose heart he had broken.

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It won't be easy though, because Sungyeol is determined to not let himself get hurt again.