We've be friends from Kindergarten till High School. After we graduated from High School we haven't meet for years!Do you remember me?Do you remember our promise? Do you remember when is the last we talked? Can fate help us be together?What will happen to us,if we don't get to be with each other? If I spent the rest of my life with you..can we be happy?If we can be happy,will everything change?

Characters:

Jessica Jung(Jung Sooyeon)

-Donghae's childhood best-friend/neighbor 

-From America

-4 years old - 27 years

-Moved to Seoul when she was 3.

-Inlove with Donghae secretly.

-Best friend of Tiffany Hwang in America

-Try her best to communicate with Donghae after he met Tiffany

Lee Donghae

-Jessica Jung childhood bestfriend/neighbor

-Age:5 years old-28.

-Inlove with Jessica secretly but he didn't confess his feelings to Sica

-likes Tiffany 

-Ignore Sica after he become friend with Tiffany

Krystal Jung(Jung Soojung)

-Jessica's sister

-Donghae's neighbor.

-Always help her sister with any problem.

-From America

-Always help Donghae like she help Jessica

-like to sister

-Understand her sister's feelings

-Try her best to make Donghae communicate with Jessica after he met Tiffany

Tiffany Hwang(Stephanie Hwang)

-Jessica's childhood bestfriend from America

-4 years old -27

-Always understand Jessica's feelings

-Always support Jessica

-only a friend to Donghae

-Always help Sica when she need her.

-Just like a sister to Sica

-Try her best to help Donghae to communicate with Jessica

-From chapter 8

And others----(characters)