At the coffee shop...

"Seohyun, I will just leave you here for a minute, because manager Kang asked me to buy something outside, arasso?" yoona said

"Deh, arasso" 

While yoona was outside, seohyun is incharge of yoona's work in preparing the coffee for the costumers. And suddenly, a guy enter the coffee shop...

"Annyeonghaseyo, what can I do for you sir?" she asked

"Give me one glass of cola, please" he replied

"Ahhh.... I'm sorry sir, but we don't have a cola in here, we only have a coffee because this is a coffee shop" she said

"Then, why are you asking me of what I want? ofcourse coffee! you don't even thinking... that's why I said cola. Anyway, just me one cup of coffee" he said

"Ok sir, jwisonghamnida, just a minute" seohyun replied

After a minute...

"Ok sir, here's your coffee" seohyun said and smile

"Pweeh!!! (the guy spoiled the coffee) what is this!? this coffee taste bad! I don't like it!"

"What? bad? but sir, that's not bad, you are the only one who said that"

"What? me? but honestly, this coffee taste bad, trust me! why don't you try it.."

"Aniyo, that's against our rules, sir."

"Then what can I do with this coffee? I will drink it? huh!? tell me! You know what, where is your manager? I want to talk to her or him, whatever, call now!"

"Hah? ah, no need sir, I will just replace it. So, can you give me the coffee?" (Then the guy gave back the coffee)

But while seohyun replacing the coffee, she turnaround and even put salt in it and spoil her saliva in the coffee and then she give the coffee to the guy...

"Here is your coffee sir, I'm sorry again" seohyun said with an evil smile

"Pweeh! what is this again!? it's still bad! more bad"

"Well, sir, I really do it on purpose this time, because you humiliated me in the first place. So, I don't care if I humiliated myself, as long as I teach you a lesson. And you? calling me an idiot? Well, you are an arrogant!"

"What!?"

"What happen in here? seohyun? what did you say?" 

"Manager Kang?" seohyun said and the guy turn to see who is it. 

"What  did you do this time, huh? you don't have a right to shout at  your costumers! you know that is against our rules!"

"But..."

"No buts... Follow me at my office together with the costumer... now!"

"Deh" seohyun said with a sad face.

At the office...

"Look sir, I'm sorry for what my applicant did to you a while ago, I will say sorry of her behalf as his manager. I'm sorry again..." the manager said

"Well ok, But I want your applicant to be the one who will say sorry of what she did" he said and he look at seohyun

"Well, seohyun, say sorry or else, I will fire you" the manager said

"Sor...ry... sir" seohyun said

"Well, you know, you should be thankful, because after you put salt in my coffee and you even put your saliva in there. And now, you just have to say sorry" he said

"But  sir, you humiliated me in the first place, that's why I was force to do that, because of anger" she defend

"But you (he pointed seohyun) humiliated yourself also. So, don't point me all the fault that you also did. And anyway, your coffee really taste bad, and I cannot lie with that fact."

"Find... I'm sorry again."

After what happen...

"Oh, seohyun why did you do that to the costumer?" yoona ask

"Because he said that my coffee taste bad" seohyun replied