Thread:KingJupiter/@comment-25436862-20141012225014/@comment-25436862-20141013005120

Akemi is the perfected version of what Yoru and Hado were supposed to be. Read her background and you will get a more detailed explanation. I'm thinking as word of the attack on the village spreads it reaches her. As the "creator" of Yoru, Hado and Akemi was the inventor of Phantom State, she has a reason to take interest in the attack and heads to the leaf village to investigate.