Katana Info Katana Guides & Knowledge Hub » koiguchi

The koiguchi is the opening of a katana's saya (scabbard) where the blade enters and exits during drawing and sheathing. Though often overlooked, this small component plays a vital role in securing the sword, protecting the blade, and enabling smooth, controlled draws. This guide explores the anatomy of the koiguchi, the materials used in its construction, its importance in Japanese swordsmanship, and how proper...