“Only to have you double-cross me? Don’t waste your breath. What’s your plan? You think that you can hold me hostage?”
“Hey! There’s an idea.” Komori gave an exaggurated shrug. “But you only just met Kyotoryu and might not serve as one. Personally,” he said, grinning, “I would have picked his sister.”
So he knew about Nanami. How couldn’t he, if he’d been listening; but this proved it.
“Then again, maybe not – thaat sister of his is more than meets the eye. My Star Cannon was supposed to wipe out you and Kyotoryu – but that girl somehow saw the whole thing coming.”
He was right.
Only now did the Schemer realize that Nanami had saved them from the gale of ninja stars that blew through the wall of the hut. Throwing herself into the line of fire and pushing Togame and Shichika – before the shuriken came through the wall!

Katanagatari Omnibus 1, Page 68