So they're dirt. I get it!When Tamagahane is being refined, impurities called Noro are left behind.I see...!Are they living things?In summary, it's like how eraser dust clumps together, right?I, Kohagura Ellen, shall explain!The O-katana which we Toji wield are made from sacred steel, Tamahagane, but...Aradama and O-katanaThey appeared last time, but what are aradama?Noro can easily accumulate and meld together......and transform into creatures that induce calamity, the aradama!Nice conclusion!She's treating a threat to humanity like an eraser!
