Sulli looks at the door and her eyes widens at the view.

“Yah Jung, pinch me.”

“Deh?”

“Do it.”

Krystal did as Sulli ask her and Sulli cried an ouch.

“I’m not dreaming.”

She said and earns a nod from Krystal.

“You are not.”

“What kind of bull is this?”

She mumbles before she heard the class representative asks them to stand up.

They all did while Sulli stands up lazily.

“Annyeonghaseyo. I’m the new professor for your math class. My name is Choi Minho. Call me Professor Choi.”

The whole class greets Minho, minus Sulli and some girls is giggling while whispering how handsome and fine sculpted he is.

Sulli scoffs and sat down.

“How is that jerk handsome?”

She thought and did turn the leaflet to the page that Minho asks them to.

She can’t fail this class.

Not when it’s Minho’s class.

“I’ll call the name randomly and please come to the front and solve the problem okay.”

“Neh.”

“I hope he’ll pick my name.”

“I hope Professor Choi picks mine.”

“Ani. He’ll pick mine.”

Sulli shakes her head when she heard all that.

“You guys will regret it once you know how he teach math.”

She mutters to herself when she heard her name being called.

She stands up in surprised.

“Ahhh. Why is that guy calls my name?”

Sulli stood up and went to the front.

Sulli stares at the question before she frowns and took the marker.

Instead of answering, she stands there unmoved.

“You can’t do it?”

Minho asks with innocence in his eyes which makes Sulli want to punch his face but she endure.

“I can professor.”

“So do it. How do you factorize the algebraic expression x2 - z4?”

Minho sat on the edge of the table and stares at Sulli as he crosses his arms.

She then starts writing on the white board, factorize the given question and place the cap on.

She smiled; more to smirk to Minho when she finished.

Minho stood up and checks her answer.

“Hmm you do it pretty well Miss Choi. But you miscalculate it here.”

“Instead of this (x + z2)(x - z2) = (x + z)(x + z)(x - z), you should do it as (x + z2)(x - z2) = (x + z2)(x + z)(x - z). You missed one square here.”

He said as he pointed on the equation.

Sulli bites her lips when she checks the question and her answer again.

She sighs when she saw her carelessness.

“So, you know that you have to work harder now?”

He asked Sulli with a clear voice.

“Yes professor.”

Sulli answers while she fakes a smile.

She then bows to him and makes her way to her seat.

“Ottoke Sulli ah?”

Krystal asks worriedly when she saw Sulli is near to