The mastery of Santoryu, or Three-Sword Style, defines Roronoa Zoro as a unique entity in the landscape of world-class swordsmen. Unlike traditional combatants who rely on singular precision or dual-wielding speed, Zoro’s approach incorporates a third blade held in the jaw, a feat requiring superhuman physical conditioning and mental focus. As of the current era, his weaponry has shifted from mere tools of survival to extensions of his Conqueror’s Haki, each blade carrying a distinct legacy and a volatile temperament.

The Anchor of the Trio: Wado Ichimonji

Wado Ichimonji is more than a weapon; it is the physical manifestation of a promise. Forged by the legendary Shimotsuki Kozaburo, the same man who founded Zoro's home village in the East Blue, this blade belongs to the 21 Great Grade Meito (O Wazamono). Its value exceeds 10 million Berries, but to Zoro, its worth is immeasurable.

Historically, Wado Ichimonji was the family heirloom of the Isshin Dojo, intended for Kuina. Following her tragic passing, Zoro inherited the blade to carry their shared dream to the pinnacle of swordsmanship. Its design is minimalist—a pure white hilt and scabbard (shirasaya style)—contrasting with the often-aggressive aesthetics of other legendary blades.

In terms of combat performance, Wado Ichimonji is characterized by its incredible durability. It was the only sword in Zoro’s original arsenal to survive the devastating clash against Dracule Mihawk’s Black Blade, Yoru, at the Baratie. While his other unnamed katanas shattered like glass, the Wado remained intact, signaling its superior craftsmanship. In the Three-Sword Style formation, this is almost always the blade Zoro places in his mouth, serving as the central axis for his rotational and defensive maneuvers.

The Unpredictable Curse: Sandai Kitetsu

Sandai Kitetsu represents the darker, more volatile side of Zoro’s arsenal. Picked up in a bargain barrel in Loguetown, this sword is a Grade Blade (Wazamono) but possesses a reputation far beyond its official ranking. It is a "cursed" blade, the third in a line of swords forged by Kozuki Sukiyaki under the Kitetsu name, all of which are said to bring a gruesome death to their wielders.

Zoro’s acquisition of Sandai Kitetsu is a defining moment in his journey. By testing his luck against the sword’s bloodlust—tossing it into the air and letting it fall across his extended arm—he established a relationship based on dominance rather than mere usage. The blade did not cut him, effectively "choosing" him as a worthy master.

In battle, Sandai Kitetsu is described as a "problem child." It has a tendency to cut more than intended, often drawn toward blood. While it lacks the raw prestige of the 21 Great Grade swords, its sharpness is uncanny. It serves as a reminder that a swordsman’s strength is not just in his technique, but in his ability to suppress and channel the bloodlust of a demonic weapon. For years, there has been speculation about whether Zoro will eventually upgrade this to the Nidai or Shodai Kitetsu, but the current synergy he has with the Third Generation remains a core part of his combat identity.

The Blade of the Underworld: Enma

The most recent and significant addition to Zoro's loadout is Enma, the legendary sword that once belonged to the Daimyo of Kuri, Kozuki Oden. Given to Zoro by Kozuki Hiyori in exchange for returning the national treasure Shusui to Ryuma’s grave, Enma has fundamentally altered Zoro’s power ceiling.

Enma is another masterpiece of Shimotsuki Kozaburo and sits comfortably within the 21 Great Grade Meito. However, its attributes are unique: it is one of the only two blades ever known to have permanently scarred the nearly indestructible Kaidou. Enma’s primary characteristic is its "greed." It forcibly drains the wielder’s Busoshoku Haki (Armament Haki), manifesting in a massive, uncontrolled discharge of power that can slice through entire coastlines.

For a lesser swordsman, wielding Enma is a death sentence; it would drain them dry until they were nothing but a husk. For Zoro, Enma became the ultimate training tool. During the raid on Onigashima, he learned to stop resisting the drain and instead lean into it, eventually manifesting his Haoshoku Haki (Conqueror’s Haki) through the blade. This led to the creation of the "King of Hell" style, where all three blades are coated in a mix of advanced Armament and Conqueror’s Haki, characterized by green, flame-like aura trailing from the steel. Enma is the catalyst that allowed Zoro to bridge the gap between a master swordsman and a top-tier global powerhouse.

Retired Blades: The Path to Mastery

Zoro’s current trio did not come together by accident. It is the result of a long history of loss and replacement.

The Unnamed Dual Katanas

In his early days as a bounty hunter, Zoro used two standard katanas alongside Wado Ichimonji. These were likely well-made but lacked the spiritual resonance of Meito. Their destruction at the hands of Mihawk served as a harsh lesson: a swordsman is only as strong as the bond he shares with his steel. Without high-grade weapons, the sheer force of a world-class opponent will simply break the tools of the trade.

Yubashiri: The Gentle Snow

Gifted by Ippon Matsu in Loguetown, Yubashiri was a Skillful Grade (Ryo Wazamono) blade. It was exceptionally light and fast, allowing Zoro to execute high-speed techniques with minimal effort. Its loss at Enies Lobby, where it was rusted into dust by a Marine captain’s Devil Fruit power, was a rare moment of mourning for Zoro. He eventually laid the remains to rest on Thriller Bark, at the gravesite of the Rumbar Pirates.

Shusui: The National Treasure

Shusui was the Black Blade (Kokuto) of the "Sword God" Shimotsuki Ryuma. As a Great Grade blade, it was exceptionally heavy and powerful, capable of turning Zoro’s slashes into devastating shockwaves. While Zoro mastered its weight, the sword was ultimately meant for Wano. Returning Shusui was not just a political move but a spiritual one, allowing Zoro to transition from using a "pre-made" Black Blade to the path of forging his own through Enma and Wado Ichimonji.

The Mechanics of Santoryu: How Zoro Uses 3 Swords

To the uninitiated, the Three-Sword Style looks like a logistical nightmare. However, the system is highly specialized, dividing tasks between the three points of contact.

  1. The Mouth Blade (Axis): Usually Wado Ichimonji. This blade provides the central point for rotational attacks like the Tatsu Maki (Dragon Twister). It also serves as a last-line defense for the head and neck. The jaw strength required to keep a katana stable during a high-velocity impact is nothing short of supernatural.
  2. The Right Hand (Power): This hand often leads the charge. When using Enma, this becomes the primary source of Haki-based projectile attacks. Zoro’s right-hand grip is typically traditional, focusing on downward thrusts and heavy vertical slashes.
  3. The Left Hand (Versatility): Zoro frequently employs a reverse grip with his left-hand blade (often Sandai Kitetsu). This allows for unorthodox parrying angles and quick upward slashes that catch opponents off guard. By varying the grips, he can cover a 360-degree field of vision, making it nearly impossible to flank him.

The Significance of the Black Blade

A recurring theme in Zoro’s journey is the concept of "forging" a Black Blade. As explained by Mihawk and further elaborated in Wano, any blade can become a Black Blade through continuous battles and the infusion of Haki. Once a blade turns black, its grade increases, and it becomes virtually indestructible.

Currently, Zoro does not have a permanent Black Blade. Shusui was already black when he received it, meaning it wasn't his accomplishment. The goal now is to turn Wado Ichimonji, Sandai Kitetsu, and Enma into permanent Black Blades. This would not only elevate their grades—potentially making Wado and Enma "Supreme Grade" (Saijo O Wazamono)—but would also solidify Zoro’s status as the greatest swordsman in the world.

Technique Evolution: From Oni Giri to King of Hell

Zoro’s techniques have evolved in parallel with his weaponry. His signature move, Oni Giri (Ogre Cutter), has seen numerous iterations:

  • Classic Oni Giri: A basic three-way simultaneous slash.
  • Enbima Yonezu Oni Giri: A variant used during the Enies Lobby era that creates a demonic illusion.
  • Rengoku Oni Giri (Purgatory Ogre Cutter): A post-timeskip version that is significantly faster and more powerful, capable of shattering high-grade defenses.
  • King of Hell Three-Sword Serpent (Jigoku no San-Tou-Ryu): The current peak. By unleashing the full Haki potential of his three swords, Zoro creates attacks that ignore the physical durability of opponents like King the Wildfire.

This progression shows that the "3 swords" are not just static objects; they are conduits for his growing ambition. Each time he acquires a new sword or masters an old one, his entire move set is re-calibrated to account for the new weight, balance, and Haki requirements.

Choosing the Right Blade for the Right Moment

While Zoro is most famous for his Three-Sword Style, he is equally proficient in Ittoryu (One-Sword Style) and Nitoryu (Two-Sword Style). He often switches between these modes based on the opponent's nature.

  • Ittoryu is reserved for high-precision, drawing-art techniques (Iaijutsu) like Shishi Sonson (Lion's Song). In these moments, he often uses Wado Ichimonji or Enma to deliver a single, concentrated burst of power.
  • Nitoryu provides a balance of speed and defense, often used when he needs to be more mobile.
  • Santoryu is his "full power" state. It is used against the strongest foes when he needs to maximize his offensive output and overwhelm the enemy with a flurry of steel.

Conclusion: The Future of the Trio

As we look toward the final stages of his journey, the current configuration of Wado Ichimonji, Sandai Kitetsu, and Enma seems to be the definitive loadout. These swords represent his past (Kuina), his struggle (the curse of the Kitetsu), and his future (the legacy of the King of Hell).

The next step for Zoro isn't necessarily finding a better sword, but rather making his current swords the best they can be. The transition of these three blades into Black Blades will likely coincide with his final duel against Dracule Mihawk. Until then, the Three-Sword Style remains one of the most iconic and formidable fighting disciplines in history, a testament to the man who refused to be limited by the standard rules of engagement.