"Hey,"

Nayeon heard a whisper from behind.

"Hey,"

A paper flew on to the back of her head after the whisper. 

"Hey,"

She, still, was trying to focus on her biology books. She was reading a chapter of humans' lung.

"Hey,"

Another paper touched her head.

"Hey,"

She was reading words to words, sentences to sentences, lines to lines about pneumonia—an infection in lung caused by a virus, bacteria, or fungi. She was making a summary out of it.

"Im Nayeon!"

The whisper again. But, it was her name. So it was her, the one the whisper calling.  

She sighed. Right, she lost. She coul