Prologue

"Wait, will I see you again?"
"Sure you will"
"You promise?"
"I promise. Now go, and don't look back"
....And that's when she left me....
....And that's when I left him....
.....I want to her to come back to my home.....
.....I want to go back to my home....

Four years is a long time to have yet to fulfill a promise.
Haku tries to get past the barrier every chance he gets.
Chihiro tries to go back though the barrier whenever she has the time.

Maybe today will be the day,
Chihiro returns to the Spirit World.