“Anyway, how did it go? This duel between Shichika Yasuri and Nanami Yasuri – you say they’ve scheduled a rematch, but does Shichika have any chance of winning?”
“None,” Emonzaemon answered succinctly, betraying no uncertainty whatsoever. “This isn’t just about Shichika Yasuri. That woman – cannot be stopped.”
“Not even – by Hakuhei Sabi, for instance?”
“No. While Sabi truly was a genius – he was nowhere near as genius as Nanami Yasuri. If… it pains me even to imagine this, but even if a swordsman who surpassed her genius were to challenge her – those eyes of hers would make his every strength her own, post-haste.”
“Watch and Learn…”
Seeing.
Seeing everything.
Seeing through things.
Seeing into things.
Seeing beyond things.
Seeing to the end of things.
Seeing made them hers.
“Fighting is all about compatibility – strength and weakness being two sides of the same coin, even the strongest enemy can be beaten, if they meet their match… But I’m afraid this maxim does not hold for Nanami Yasuri. Were she to ever meet her match, the enemy would automatically meet theirs.”

Katanagatari Omnibus 3, Page 35