Why are katana always shown to be shaped to have the blade be only one-edged (I'm aware there are double-edged katanas)? Is there a huge advantage to a one-edged katana and a
![Oddly-satisfying video shows katana warping and bending in water as it is forged | SoraNews24 -Japan News- Oddly-satisfying video shows katana warping and bending in water as it is forged | SoraNews24 -Japan News-](https://soranews24.com/wp-content/uploads/sites/3/2016/08/1024px-katana_hardened_edge_pic_with_inset_of_nioi.jpg?w=580)
Oddly-satisfying video shows katana warping and bending in water as it is forged | SoraNews24 -Japan News-
![Japanese sword Designer, Toyo hand-grinding Katana Japanese sword pattern steel, angle, hand, geometric Pattern png | PNGWing Japanese sword Designer, Toyo hand-grinding Katana Japanese sword pattern steel, angle, hand, geometric Pattern png | PNGWing](https://w7.pngwing.com/pngs/726/495/png-transparent-japanese-sword-designer-toyo-hand-grinding-katana-japanese-sword-pattern-steel-miscellaneous-angle-hand-thumbnail.png)