Pandora in the Crimson Shell: Ghost Urn Vol. 3 (manga)

Nene and Clarion have settled in with Nene's aunt Takumi, a reclusive genius with an interest in Nene's education–and in what makes Clarion tick. As for Nene, she wants nothing more than to find ways to help people, but she wants to do it with her own skills, not with borrowed power from Clation and the Pandora Device. But between power grid problems, opportunistic thieves, and the mysterious forces at work on the island of Cenancle, using the Pandora Device may be Nene's only option!