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"That sounds like a disaster. And certainly explains why Karasuba would hate Takehito. If bringing back winging brought back the instincts, she would despise him for turning her own mind against her. The idea that no matter how much she despises the weakness of humanity her mind would insist on binding herself to one, I'm surprised she didn't kill right then and there."

Matsu shook her head with a wan chuckle, "No. No matter how much she hated him, she knew exactly what Miya was capable of. If she'd tried, Miya would have killed her. Still, Karasuba hates Miya. For protecting Takehito, for refusing to fight, for not just showing, but reveling in what she perceives as weakness. There is an enmity there that will never abate so long as they both live. And the enmity is reciprocated by Miya, because she blames Karasuba for Takehito's death."

"But wouldn't she simply kill Karasuba if she'd killed Takehito?" Harry asked.

"Ha!" Matsu let out, "She would, if she could prove it. The problem is that she can't. In fact, from a certain point of view, it could be viewed as Miya's fault."

"Oh? How so?"

Matsu spent a few seconds gathering her thoughts, "Miya wanted to be nothing more than a simple housewife, Takehito wanted Miya to be happy. Unfortunately, Miya is also the Pillar, the one responsible for protecting and watching over the rest of the Sekirei. To relieve Miya of her burden, Takehito tried experimenting with the Jinki to create a new Pillar, so Miya could live in peace. Unfortunately, what he didn't know, because Miya never told him, was that creating a new pillar requires all eight of the Jinki. At that point in time, MBI only had four of them."

http://www.fanfiction.net/s/12788315/1/