When you were 15 years old, you liked a handsome boy. You confessed your love to him but he rejected you because he thought you were ugly. You are a closed child, you even always wear a hoodie with a beanie to cover your face.

Until a few years have passed. Now you are 20 years old and now you are in college. You are no longer the introverted, nerdy kid, now you are much more beautiful and stunning.

You walk down the hallway while playing with your phone, wanting to go to your class. But there is someone standing in the hallway and you bump into his back when you are not paying attention. You saw that it was Heeseung, the boy who rejected you before because he thought you were ugly. It seems like he also recognizes who you are.