Katana Still Water Maru Blade Gentei Koshirae 若水 Oroshigane finished with a deep black

finished with a deep black patina (煮黒 / Nuriguro)

producing a hardened edge and a softer spine

the Ishime technique creates a refined matte appearance with a subtle tactile texture

Habaki (鎺): A brass habaki with a traditional Nekogaki (猫掻) texture

the ishime technique creates a matte

Katana Still Water Maru Blade Gentei Koshirae 若水 Oroshigane finished with a deep blackShinken () Still Water Katana: TangGu () Maru Blade () + TangGu () Gentei Koshirae () This practical style koshirae emphasizes structure and utility while maintaining traditional details. The saya is finished in black lacquer. Key fittingskoiguchi, kurigata, and kojiriare reinforced with water buffalo horn. The brown sageo is tied in a standard pattern. The tsuka is wrapped in brown ito over white natural samegawa (ray skin), with hishigami for a