15 years ago.

There is a girl running towards a boy. Both of them are 7 years old.

“Promise me that we are best friends forever!” The girl said to the boy.

“We ARE best friend forever and ever!” He said with a smile in his face, but the girl face seems sad.

“Good, but I have a bad news for you..”

“What it is?”

“My family are going to move to Incheon tomorrow..”

“What? So I can’t play with you anymore?” He shocked about the news.

“Yes.. I’m sorry.. I can’t do anything about it.” She sobbed loudly.

“It’s ok..”

“What should I do if I miss you?”

“You just have to look at the sky."

"Why?"

"Because we are still under the same sky even when we are apart.” Both of them look to the sky above them. She smiles.

“Ok!”

“We will meet again when we grown up. I promise you that I’ll find you. Don’t worry.” He held his tear so that she will not know that he is very sad about it.

“Really? You will find me?” She looks at him.

“Yeah, pinky promise!” Both of them ‘lock’ their promise with their little pinky.

END

On the day when they are going to Incheon,

“Omma, when can I meet Hyuk again?”

“I don’t know, dear..” The mother is pregnant, 6 months now.

“I don’t want to move out from here.. Can we?” She pouts.

“Dear, your dad has been promoted in his work. So we have to move out to Incheon today.” The mother is trying to convince the pouting girl.

“Sorry, dear. I work hard so that our life can be easy especially now you will be having little brother in 3 months.” The father feels sorry for his only daughter. He knows that his daughter is very close to the boy next door, but he can’t do anything. It is his boss order.

“The baby that is in omm