Katana Info » koiguchi

Everything You Need To Know About Koiguchi The Koiguchi, an integral part of the Japanese katana, is one of the reasons wh a katana fits into its sheath (saya) so firmly.  If you're interested in finding out more about this special component, keep reading! Table of Content What Is Koiguchi 鯉口? What's The Usage Of Koiguchi? What Are The Common Lengths Of Koiguchi? Frequently...