Yuki woke up and found Kyuubi was gone. There was a single letter on her bed, written in Naruto's hand. She reached for it slowly, yawning.
It didn't take but a moment to read through the paragraph. But it took longer for the realization of what was going to happen to sink in. She raced to her door, ignoring the fact that she was in her pajamas. She had to reach her friend, NOW! She dashed as fast as she could towards the village gate. As she reached her destination, she slowed. His face appeared from the forest, as he walked. His face turned around to look at her, as he vanished.
Dear Yuki,
I'm sorry for such short notice, but Ero-sennin and I are going on a training session. Don't get me wrong. I will miss you and the village. But I want to get stronger. He's told me it will take about two years, and I won't return until I'm strong enough.
Take care my lil sis, kay?
Later
Naruto
A single tear slid down her face, as the two entities who she cared the world about vanished in a poof of smoke.
"I'll wait for you. And I will be stronger-" she whispered.