Honestly, I’m still hunting for a shred of hard evidence. Some historians point to the Japanese “kaze‑kiri”—a supposed cutting technique that supposedly turned the blade as if it were wind—but they’re mostly reading between the lines of poetry and battlefield reports. I keep asking myself whether the myth simply grew from a clever metaphor about speed and precision, or if there was a real, obscure practice buried under the legends. Until someone turns up a scroll or a clear set of instructions, I’ll remain skeptical, but I’ll keep digging in the archives.