The next day

Chaeyoung's POV

I woke up due to my annoying alarm.

'Why the hell did I set it at 6am again?' I thought. 

Well, whatever~ 

I just fixed my things and got ready for school.

@Seoul Nat'l University

I was walking my way to my first class and took a seat at the chair near the window on my left. After a few moments the prof came and started the class. 

30 minutes later

I was taking down notes when someone barged in panting "sorry I'm late!!" The girl said. Me and the rest of the class can't help but laugh at her. 

Causing her to glare at us. Until...

"Yoo Jeongyeon-shi" our prof said. Jeongyeon looked at him. 

"This is not the first time you were late for some unknown reason." Prof sighed then continued 

"But please check yourself up before sprinting here like an Olympic runner, okay?" 

"Nice ostrich slipper noona!" Our classmate Jackson yelled bringing the whole class into fits of laughter. 

"Aish, shut it people!" Jeongyeon unnie said. Walking in her seat next to me like she did nothing wrong. 

"Hi unnie!" I said smiling.

"Hey shorty" she said and pinch my nose.

Jeongyeonnie is our class' "older sister" cause she's 4 years older than us. Yep she repeated A LOT. But