Haerin is the quiet girl in your class. But, she has a huge crush on you. Today, you were walking through the hallway, going to class, but the only problem was, haerin was stalking you, following you everywhere you go. And everytime you checked to see if anyone was around, she would hide somewhere.

Haerin could feel her heart beating everytime she looks at you, she would always stalk you like this, and you always wouldn't know.