Katana Aoi Tempest Maru Blade Kin-aoi Koshirae 金葵Clay Tempered Full Tang Shinken () Aoi Tempest Katana: TangGu () Maru Blade () Niku Geometry + TangGu () Kin aoi Koshirae () This katana is hand forged (Tezukuri ) from high carbon modern steel () in the Maru zukuri () construction style. The blade is clay tempered (yaki ire ) to produce a Chji hamon (), showcasing a lively and undulating temper pattern. The koshirae features a hand finished Kuruma Sukashi tsuba (), crafted from tetsu (, iron) with an

Sageo (Cord 下緒): Japanese-made Deep burgundy sageo tied in a traditional style

The fittings follow a cohesive sakura theme with an elegant

Saya Lacquer (鞘塗): Finished in brown-gold nashiji lacquer（茶金梨地塗 / Nashiji-nuri）

while its balanced four-directional composition reflects the disciplined elegance and structural harmony valued by the samurai class

Forging Pattern (Hada 鍛肌): Ushimo-hada (牛毛肌)

Habaki (鎺): Handcrafted purple-copper Nekogaki (cat-scratch / 猫掻) pattern habaki

producing a refined brilliance reminiscent of a starlit night sky

evoking the timeless quiet strength of forged iron

The habaki（鎺） is polished brass（真鍮） with a smooth finish

enhanced with luminous raden (shell inlay)

while polishing reveals a straight suguha hamon (直刃刃文) created through clay tempering (覆土焼入れ)

This katana is hand-forged (Tezukuri / 手作り) from high-carbon modern steel (高炭素現代鋼) in the Maru-zukuri (丸造) construction style