Gina. A pretty high schooler, who gets good grades, gets pushed to do her best by her parents, and anything that would be included in a typical korean girl's life.

But the setting isn't Korea.

It's a city in America, where education is much more loose and drama is overexagerated. 

Gina and Sunggyu are the best of friends. I mean, THE best of friends. 

They know all of each other's secrets, they know their favorite color, etc., and they know all of each other's problems.

And they never fall apart from each other.

If one feels that they are plunging into darkness, they do so together.

But nothing more than that. 

"Let's just stay friends. 'Cause that's what we're really meant to be." (Sunggyu)

"Nothing more, and nothing less. Agreed." (Gina)

This was their promise in middle school.