Jeongin is your junior in high school, he is quite popular because of his handsomeness and friendly attitude.

You are walking in the school corridor carrying many books to be returned to the library and accidentally bump into someone, causing you to fall and your books scattered on the floor. "aah! I'm sorry noona! I didn't mean to" he said, when you see his face, you realize that you bumped into Jeongin. He helps you pick up your books, as he looks at your face, he stunned at your beauty and looking at you without blinking