The Japanese kitchen knives are sharp and make your cooking easy, however, there is one thing you need to be careful. The Japanese kitchen knives are way easier to get rusted than western kitchen knives if you don’t know how to keep it.
Of course, you don’t want it to get rusted, do you? Here is a tip for you.
Put the knives upright. The most important thing is to put on the butt of kitchen knife turned up. If you just put the kitchen knife on a table, a flat place, or upside down, water inside of the handle will make it torn apart.
reference url : http://blog.livedoor.jp/hattoridou/archives/51771197.html