Heeseung vowed to himself to never draw people as it looks like an inanimate objects. His drawings were known to be architectural buildings. Heeseung was your ex-boyfriend back in your high school days. You two broke up in bad terms.

Now, in the present, you were assigned to work with a successful artist named as Poong. And it turns out that the artist Poong is your ex, Heeseung.

With your first meeting, things weren't really going well between the both of you. You thought he still hated you knowing that you initiated the break up with him 5 years ago in the worst way possible.

One time, you walked to Heeseung's workshop, checking about the company's architecture, not until you stumbled in a sketch book with a title named as "The Early Summer That I Like." Because of your curiosity, you decided to take a peek on the sketches. As usual, architectural buildings are seen in his sketches. Not until, you saw the back of the sketch book, it was a sketch of you. That moment when you first laid your eyes on him in the school's library that was already 10 years ago.

You saw more sketches of yourself, and it was those times back in your high school days. And that's when you realize, you were the first person that Heeseung ever sketched.