Katana Abyssal Crimson Maru Blade Enryū Koshirae 炎龍Clay Tempered Full Tang Shinken () Abyssal Crimson Katana: TangGu () Maru Blade () Niku Geometry + TangGu () Enry 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 Sanbonsugi hamon (), showcasing a bold and rhythmic temper pattern. The koshirae features a mokko gata tsuba () forged from tetsu (, iron) with openwork axe motifs

This handcrafted saya features a fine raden lacquer finish—an intricate surface treatment using micro-particles of luminous shell inlay (raden) scattered densely across a black lacquer base

The effect balances elegance with bold presence

bringing the design to life from every viewing angle

delicately engraved with sakura motifs (桜文様)

the menuki（目貫）depict the Mitsuba Aoi emblem

giving the mounting a secure and composed appearance

Careful polishing reveals a refined Suguha Hamon (直刃刃文)

Tsuba (Sword Guard) “Wachigai-guruma”｜Hand-Polished Iron Sukashi Tsuba with Interlocking Wheel Motif and Traditional Black Patina Finish

featuring a distinctive gold-speckled texture

This is achieved through folding and directional forging in the orikaeshi-tanren（折返し鍛錬） process

The surface shows Masame-hada mixed with Itame-hada（柾目肌交板目肌）

A practical and symbolic guard rooted in tradition