Prologue: [Akai's POV]
"Akai, I'm very, very sorry but in order to be what I wanted, I need to go now. I don't want to let down my family. So please, don't stop me," a boy in his 6 yrs of age told to a cute girl who's also in her 6 yrs.
They both look very sad.
"I won't stop you…" said the girl. She has big brown eyes and short black hair with white skin. The boy on the other hand, the boy had short white hair and brown eyes, and fair skin.
"But I only want you to promise me that you will come back and we will never forget each other," she further said.
"A pinky promise then, that we will never forget each other," said the boy.
"YES!"