Sword Art Online Wiki

«Elucidator» (エリュシデータ, Eryushidēta?) is Kirito's primary weapon in Sword Art Online. This sword is a demonic monster drop from a boss on the 50th Floor[1] that Kirito wields along with «Dark Repulser». It was boosted to +45[2] by Lisbeth out of a maximum of 50.


Elucidator is a pitch black sword with trims of gray. It has a black hilt connected to a hand guard that drops down on the right side. Attached to this elongated area of the hand-guard is part of Elucidator's blade, so as to better aid the user in retaining their grip on the sword when it is being used. The blade is completely black like the rest of the sword and the said blade is outlined in a light gray.[3] In the design art by the illustrator of the novels, a small cross is emblazoned on the flat of the blade, just beneath the tip.



ELUCIDATOR +0[citation needed]
Long Sword / One Hand[4]

  • Range: Short[4]
  • Type: Slash[4]
  • Attack: 700-710[4]
  • Durability: 1350[4]
  • Weight: 170[4]
  • Requires: 61[4]
  • Equip +50[4]
  • Agility +28[4]
  • Strength +48[4]
  • Armor[4]


Aincrad Arc[]

Warmth of the Heart[]

On June 25, 2024, Kirito displayed the Elucidator to Lisbeth, requesting her for a blade of equal quality. Appraising the weapon, the blacksmith found it was not a player-made weapon but a rare, high-quality boss drop. When the blacksmith offered her best sword, Kirito struck it with the Elucidator to test its durability, whereupon Lisbeth's sword broke. After the Dark Repulser was forged the next day on June 26, both the Elucidator and the new sword were used by the swordsman to demonstrate his Dual Blades skill due to Lisbeth's inquiry on his request for a sword similar to the Elucidator.

Sound of Water, Sound of Hammer[]

In August, 2024, after the exhausted Lisbeth managed to upgrade the Dark Repulser from +39 to +40, Kirito immediately asked her to upgrade the Elucidator to +40 as well.

October, 2024[]

On October 18, 2024, Kirito was forced to use the Elucidator, along with the Dark Repulser, to defeat The Gleam Eyes in the 74th Floor Labyrinth in order to protect an Aincrad Liberation Force party from being decimated by the Floor Boss. Two days later on October 20, the Black Swordsman used the Elucidator with the Dark Repulser in his duel against Heathcliff in Collinia but lost.

November, 2024[]

On November 7, 2024, Kirito utilized the Elucidator, alongside the Dark Repulser, in the battle against The Skull Reaper in the 75th Floor boss room. Shortly thereafter, the swordsman wielded both blades in his fight against Heathcliff, who was revealed to be Kayaba Akihiko. After the Dark Repulser shattered in the middle of the duel and Asuna sacrificed herself to protect Kirito, the Elucidator was knocked from the despondent swordsman's hand when he feebly attempted to resume his attack on the guild leader.

Ordinal Scale[]

On April 29, 2026, during the battle against An Incarnation of the Radius, the Elucidator and the Dark Repulser were loaded with the rest of the save data for Kirito's avatar from the SAO server by Yui. The two swords were used by Kirito to perform Starburst Stream as the final attack on the boss.


  • Kirito did not have enough STR to equip this sword immediately after obtaining it.[5]
  • Elucidator was among the items that Kirito inherited in ALfheim Online from his Sword Art Online save data,[6] due to the two games having an identical save format.[7] However, as all the items were corrupted and could have been detected by the system's error detection protocol, Kirito deleted all of them.[7]
  • Kirito chose the length of the Night Sky Sword in the Alicization Arc to be the same as the length of the Elucidator.[1]



  1. 1.0 1.1 Volume 10, Chapter 4, Part 3
  2. Material Edition 16
  3. Episode 07
  4. 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 Elucidator's appraisal window in Episode 07.
  5. A tweet by the author
  6. The presence of MHCP001 among Kirito's items suggests that the save data was recent.
  7. 7.0 7.1 Volume 3, Chapter 2


SAO Weapons Anneal Blade - Dark Repulser - Ebon Dagger - Elucidator - Guilty Thorn - Karakurenai - Lambent Light - Liberator - Mate Chopper - Stout Brand - Sword Breaker - Throwing Pick - Tyrant Dragon - Wind Fleuret
Argyro's Sheet - Blackwyrm Coat - Coat of Midnight - Cor - Crystal Bottle of Kales'Oh - Crystallite Ingot - Crystals - Divine Stone of Returning Soul - Dusk Lizard Hide - Eternal Storage Trinket - Hand Mirror - Mighty Strap of Leather - Mirage Sphere - Pneuma Flower - Potions - Ragout Rabbit's Meat - Ring of Agility - Ring of Angel's Whisper - Scavenge Toad Meat - Tremble Shortcake - Vendor's Carpet - Yui's Heart
ALO Black Iron Great Sword - Blue Long Sword - Crest of Yggdrasil - Demonic Sword Gram - Holy Sword Excalibur - Lightning Hammer Mjölnir - Long Sword - Sap of the World Tree - Yrd
GGO Accuracy International L115A3 - Credit - Defense Field - FN Five-Seven - GE M134 Minigun - Kagemitsu G4 - Metamaterial Optical Camouflage Mantle - PGM Ultima Ratio Hecate II - Plasma Grenade - Procyon SL - Satellite Scan Terminal - Starship Metal Estoc - Type 54 "Black Star"
Project Alicization Black Lily Sword - Blue Rose Sword - Conflagrant Flame Bow - Divine Object - Dragon Bone Axe - Fragrant Olive Sword - Frost Scale Whip - Gigas Cedar - Goblin Sword - Heaven Piercing Sword - Night Sky Sword - Silvery Eternity - Time Piercing Sword - Twin Edged Wings