Katana Abyssal Butterfly Hitatsura Hamon Kairyū Kagechō Koshirae 淵蝶 FS Samegawa (Ray Skin 柄鮫): Natural

Samegawa (Ray Skin 柄鮫): Natural rayskin (鮫皮) beneath the tsuka-maki

with a hardened steel core between softer outer layers

finished with a darkened patina

A black sageo (黒下緒) is traditionally tied to the kurigata

smelted from satetsu (砂鉄) and repeatedly folded (orikaeshi-tanren / 折り返し鍛錬)

Katana Abyssal Butterfly Hitatsura Hamon Kairyū Kagechō Koshirae 淵蝶 FS Samegawa (Ray Skin 柄鮫): NaturalHitatsura Hamon Full Tang Shinken () Abyssal Butterfly Katana: TangGu () Maru Blade () + TangGu () Kairy Kagech Koshirae () This katana is hand forged (Tezukuri ) from high carbon modern steel () in the Maru zukuri () style. The blade is clay tempered (yaki ire ) to produce a Hitatsura hamon (full temper pattern ) that spreads dynamically across the surface, symbolizing untamed elemental energy. The koshirae features a maru gata tsuba () forged from