Kang Haerin , she has been my enemy since childhood. She often fights with me, even though it's just small things. Well, she is Kang Haerin. What do I expect?

One day , I am rushing to class because I am already late! Until I bumped into someone hard, causing me to fall along with them. Rubbing my sore butt earlier before I looked at the girl I bumped into earlier.

Oh. It was her.

"Hey! can you be more-" she stopped talking as soon she looked at me, with a surprised yet annoyed face.

— "Ah.. being late again ?" She said in a mocking tone and chuckle.