Someone earlier said that humans couldn't even "think about" killing other humans in this world.
Clearly not true, considering, well, their entire educational system.
e:
Actually, didn't they giveIf I'm remembering that correctly, they can think about killing others all they want, but they can't think of violently doing it or doing it with their cantus.Shun some poison pills that didn't work?
He
metabolized them unconsciously to render them harmless. Considering the other examples Tomioka gives, poison seems to be the preferred option for dealing with karma demons. I guess it being considered suicide helps.