“Shiki, I see that is an ancient katana you have there. You can’t take out something like a five
hundred-year-old katana in here. What will you do if the Bounded Field gets cut apart?”
Hearing that, Shiki froze. Touko-san said it was a katana. But was that blunt metal plate, that looked
like an enlarged iron ruler that couldn’t cut anything, really a katana..?
“On top of that there’s even a Kuji on it. Is it ‘May those who preside over all warriors be my
vanguard’? I’m sorry, but my Bounded Fields can’t stand up to a famous five hundred-year-old
katana. If you take that out here, all the things in the lower floors will come tumbling down.”
Taken back by Touko-san’s unusually threatening words, Shiki had begun to pack the shinai bag
away again... I think it was certain that these two had talked about a lot of strange and wonderful
topics while I was away.

Kara no Kyoukai: The Garden of Sinners, Volume 5, Spiral Paradox 3 /7