Btw, in Kirin's "At the edge of the riverbank", an old woman throws a tooth at Sensei. There's probably other times, but that's what comes to mind.
I'm surprised Yumi hadn't sold that if it's real, but yeah fair enough. My bets still on Ayane though.
Now, I want to see Yumi vs Tsuneyo in swordsmanship. Albeit Tsuneyo seems stronger, more skilled, and more ruthless.
Also, I'm pretty sure that Handgun in the donuts box is Ayane's, but I could be wrong.
Io has a bunch of box openers and pills, Noriko has her knife and probably some other stuff like drugs or rope. Touka likely has mace and stuff. Besides that tho, I can't recall the others having weapons.