Zenitsu Katana (Demon Slayer) - ゼンイツ

Hand-forged Zenitsu Katana — a Nichirin sword replica from Demon Slayer. Forged from 1060 carbon steel with a darkened blade featuring golden lightning bolt engravings along its length. Full tang, sharpened, curved. Silver-and-gold circular tsuba, brass habaki, white cotton ito over gold synthetic rayskin, white lacquered saya with gold kojiri. Includes reddish-brown wooden display stand. Thunderclap and Flash — one breath, one strike.

Zenitsu Sword Specifications

Golden Lightning Engravings — Thunder on Steel

The darkened blade features golden lightning bolt patterns etched across the steel — branching, crackling lines that evoke Thunder Breathing's electrical energy. These engravings are the defining visual feature of any Zenitsu katana, distinguishing it from every other Nichirin sword in the series. The gold-on-dark contrast catches light from every angle, making the thunder pattern visible in any display condition.

Silver-Gold Tsuba — Thunder Guard

The circular tsuba combines a silver face with a gold rim — clean, minimal, and suited to a swordsman whose technique demands zero drag. The smooth disc shape avoids the ornate relief seen on other Demon Slayer Nichirin guards, reflecting Zenitsu's fighting philosophy: one form, perfected beyond limitation. The brass habaki beneath secures the blade firmly. Gold diamonds of rayskin visible through the white ito wrap continue the thunder-gold accent from guard through handle.

White Saya — Zenitsu's Purity

The white lacquered saya contrasts sharply with the dark lightning blade inside. White is rare among Demon Slayer Nichirin scabbards — most Corps members carry darker sheaths — making this Zenitsu sword immediately recognizable on any display. The gold kojiri (end cap) at the scabbard tip provides a finishing touch that ties back to the lightning theme. This saya pairs naturally alongside the black and red scabbards of Tanjiro, Rengoku, and other Demon Slayer blades in our Demon Slayer katana collection.

Zenitsu Agatsuma — Thunder Breathing

Zenitsu Agatsuma is a Demon Slayer Corps member who mastered only one technique: Thunder Breathing First Form — Thunderclap and Flash. Where other slayers learn full Breathing arsenals, Zenitsu perfected a single form to such extremes that it surpasses complete mastery. His body executes the technique unconsciously when fear overwhelms him, moving faster than demons can perceive. Trained by former Thunder Hashira Jigoro Kuwajima, Zenitsu proves that depth defeats breadth — one move perfected becomes six-fold, eight-fold, and eventually his own creation: Flaming Thunder God.

Zenitsu Katana — 1060 Carbon Steel

Forged from 1060 carbon steel with full-tang construction. The darkened finish provides the background for the lightning engravings — a deliberate contrast requiring additional forging steps beyond standard polished blades. Sharpened and functional, with the edge retention 1060 delivers. Most competing Zenitsu replicas use 1045 steel with printed (not etched) lightning patterns — this blade's engraved gold and higher-grade steel represent a clear upgrade.

Zenitsu Katana Display & Demon Slayer Collection

Ships with a clean reddish-brown wooden stand. The white-and-gold palette stands out among darker Demon Slayer swords, making this blade an ideal centerpiece or contrast piece in any Nichirin display. Pair with Tanjiro's black blade, Rengoku's flame sword, and our generic Nichirin for a comprehensive collection.

Frequently Asked Questions About the Zenitsu Katana

What color is Zenitsu's Nichirin sword?

Zenitsu's Nichirin sword turns yellow when he first draws it, reflecting his Thunder Breathing affinity. In Demon Slayer, Nichirin blades change color based on the wielder's Breathing style. This replica captures that yellow-gold lightning theme through the etched golden patterns on the darkened blade.

What is Thunder Breathing First Form?

Thunderclap and Flash (Ichi no Kata: Hekireki Issen) is a single lightning-speed draw-and-slash technique. Zenitsu mastered only this one form but refined it into multiple variations: six-fold, eight-fold, and Godspeed versions, plus his original creation Flaming Thunder God used against Upper Moon Six.

Is this Zenitsu katana sharp?

Yes. The 1060 carbon steel blade is hand-sharpened and functional. Handle with care, store inside the saya, and check your local regulations regarding bladed weapons before ordering.

Why does Zenitsu fight while sleeping?

Zenitsu's extreme fear prevents conscious execution of Thunder Breathing. When he loses consciousness — through sleep, fainting, or panic — his body activates the technique through pure muscle memory. As the series progresses, he learns to fight while awake.

How many Thunder Breathing forms exist in Demon Slayer?

There are six original Thunder Breathing forms. Zenitsu only learned the First Form but perfected it beyond what any previous user achieved. He later created a seventh form — Flaming Thunder God — entirely his own invention, used to defeat the Upper Moon Six demon Kaigaku.

Care Instructions

Wipe the blade with a soft cloth after handling — the darkened finish and gold engravings require gentle cleaning to preserve the contrast. Apply choji oil to the steel. Clean the white lacquered saya with a dry cloth to prevent yellowing. Polish brass fittings gently. Store in the saya away from moisture and direct sunlight.