Krystal was always the more mature one between the two of them.

Jessica just couldn't let go of her childish antics.

If you didn't already know, you would have guessed that Krystal was the older sibling; considering the fact that she was more composed, poised, polite, there was even a considerable height distance between the two.

But Jessica was more outgoing, jumpy, and clingy, even in public. 

And Krystal found her so annoying.

Peculiarly because Jessica never failed to show how much love she had for her younger sister.

Krystal finds it terribly embarrassing, notably in public.

Jessica would cling to her, hug her, kiss her.

And Krystal hates it when, no matter how hard she tries, those acts cause her cheeks to light aflame.

That's even more embarrassing.

She hates it when Jessica would come close and mutter a soft "saranghae" right outside the shell of her ear.

Krystal would reply with a harsh "aniyo!", but she can't deny the obvious shiver that rolls off her shoulders.

Worst of all, Jessica doesn't seem to notice Krystal's very noticeable annoyance toward her.

And it irks Krystal to no end.

Krystal hates it all.

She hates Jessica.

And she hates how Jessica makes her feel.