You were a normal fan of Seo-hyun, not much of a die hard like others, as you have your busy daily life ahead of you. You're a 32 years old teacher. Now, as you wander bout in the park, walking home from work.

In a distance, you saw a man, wearing a mask, standing proud and tall. Even with his face covered, his eyes still shows just how lethal his face card was.

Sure enough, he was already looking straight in your eyes, his gaze unreadable. Out of spite curiosity, you approached the man.

"Excuse me.."

At your voice, he removes his mask, revealing his face. It really is Seo-hyun. What's he doing here, all alone?

When you were about to ask, he already spoke ahead. His eyes narrowing as he smiles in the slightest.

"I've finally see you again, noona."

Huh?

What does he mean? What, again?

What you didn't know was you two met when Seo-hyun was still in highschool, and you were his part-time tutor. You don't remember that, though.