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Personal Information
Name (Kanji/Kana)
Name (Romaji)[?]
Yujio (Eugeo)
11 (at Prologue I)
17 (during Chapter 1)
19 (Chapter 4-8)
VR Played
  • Orick (father)
  • Two unnamed brothers
  • Sulinea (sister)
  • Occupation
  • «Giant Tree Cutter» (Formerly)
  • «Swordsman» (Formerly)
  • «Valet» (Formerly)
  • Integrity Knight (Current)
  • Media

    Eugeo (ユージオ, Yūjio?) was a protagonist and Kirito's best friend and partner in «Project Alicization».


    Eugeo was a kindhearted and considerate person who thought about the needs of others as well as his own. This was shown when he offered to share his food with Kirito, when they first met during Kirito's second dive, as he thought that Kirito must have not had anything to eat the whole day. This was also shown in the way how he was always considerate towards his valet, wanting to help her with her duties and trying to reduce her workload. He also tried his best to maintain a good relationship with his valet by having bonding sessions with her and even telling Kirito off for trying to talk his way out of the session.

    Eugeo was initially a very compliant person who could not even think about breaking the rules. This was the result of both his Seal of the Right Eye, as well as his own personality. This aspect changed later on after witnessing how Raios and Humbert abused their authority as nobles to deceive and abuse his and Kirito's valets to get through to him. During the event, Eugeo not only managed to break his seal, which was a feat that no other Artificial Fluctlight, including those who were more prone to looking for loopholes in laws, had accomplished. Eugeo finally understood that laws were not absolute and that some things must be done, even if prohibited by law.

    Eugeo was initially a person who lacked resolve as well. Even after his childhood friend was taken away, he did not have the resolve to go after her and save her, using the excuse of having a Sacred Task to never think seriously about leaving the village and spent six years cutting an unfellable tree instead. Only after meeting Kirito did Eugeo begin to take action, though only because he had his friend to guide him. Although after breaking his seal, Eugeo did start to show signs of strengthening his resolve, as he no longer doubted as much when asked whether he was ready to continue towards the cathedral.


    • Eugeo before the Academy.
    • Eugeo in his customized uniform.
    • Eugeo as an Integrity Knight.

    Eugeo was described as a slender-looking boy with soft-looking flax color (light/ash brown) slightly wavy hair, green[1] eyes and a cream color skin. Before getting accepted into the Sword Mastery Academy, he wore the same unbleached rough cotton or flax short-sleeved light blue tunic with irregular texture, hand-sewn threads on the cuffs and a V-shape cut on the chest, tied with a light brown cord, and trousers as Kirito.

    When he joined the Academy, he wore a standard grey uniform. After becoming an Elite Swordsman-in-Training and being given the privilege to customize the color of his uniform, Eugeo chose to wear a blue uniform.

    After he was converted into an Integrity Knight, he temporarily wore an elegant bluish white armor with a cape.


    Eugeo was a wood cutter of Rulid Village and Kirito's childhood best friend in the beginning of the Alicization arc, during Kirito's first dive when his memories of the real world were suppressed. He, along with Kirito, were given the «Sacred Task» of cutting down the «Gigas Cedar». After their friend Alice was taken away by Integrity Knight Deusolbert Synthesis Seven, Kirito seemed to have disappeared from the memories of the people of Rulid, including Eugeo, who was later shown to somehow still have faint memories of a person who tried to save Alice from the Integrity Knight, but did not remember who the person was. Upon Kirito's return to Underworld, in which he had no memory of his first dive, Eugeo was the first person Kirito (with Kazuto's memories) encountered upon awakening. 


    Alicization ArcEdit

    Alicization BeginningEdit

    In the prologue, Eugeo has been Kirito's friend since childhood, and has recently received the Sacred Task of cutting the Gigas Cedar tree with Kirito. While having meal with Alice and Kirito, they decide to travel to a cave in the Mountain Range at the Edge, though Eugeo is reluctant to do so at first due to possibly breaking the rules, to acquire some ice, which they could use to make their meals last longer in the heat of the summer (the heat greatly decreases the Life of the food, making them go bad if not consumed quickly).

    Vol 09 - 065

    Eugeo, Kirito and Alice finding the Blue Rose.

    They find ice in the cave, along with the bones of a dragon, which was said to have been the guardian of the Human Empire from the forces of darkness, and the Blue Rose Sword, which Bercouli once tried to steal from the dragon. Because the sword is too heavy to lift and because they do not want to commit grave robbery (even though it is not against the Taboo Index), they decide to only take the ice that they came for and leave. Unfortunately, after filling their basket with ice, they realize that they cannot remember which cave they used to enter the cave (both Eugeo and Kirito point to different tunnels when Alice asks them which way did they come from).

    They choose the cave on the nearest side to try first and, soon enough, they see the exit and Eugeo rushes towards it. However, it turns out that the cave lead them to the Dark Territory, instead of Rulid Village. At that moment, they see the battle between a Black Knight and an Integrity Knight, during which the Black Knight is pierced by an arrow from the Integrity Knight's bow and crash lands near the children. When Alice attempts to help the dying knight, Eugeo remains without reaction, until he sees Alice falling, he, along with Kirito, reflexively tries to grab Alice's clothes, but, unfortunately, only slices the air with his fingers and Alice touches the ground of the Dark Territory. Eugeo tries to comfort Alice by saying that she had only touched the ground and that she shouldn't be punished for it, but quickly turns to Kirito for support.

    The next day, while cutting the Gigas Cedar with Kirito, they notice an Integrity Knight flying towards the village. After Kirito takes the axe off of Eugeo and starts running towards the village, Eugeo starts chasing after him. When they reach the village, they try to hide Alice from the Knight, when announces that he has come to take away Alice to take her away for interrogation and execution, but the Knight is able to easily locate Alice. Although Kirito encourages Eugeo to help him save Alice from the Integrity Knight, but Eugeo's doubts and the pain in his right eye prevent him from doing anything and they are soon dragged away by the villagers.

    Gigas Cedar Cleaned

    6 years later.

    6 years later (in Underworld time), he is the first person Kirito encounters when he returns to Underworld and helps him find where to stay in the village. The next day, he shows Kirito the Blue Rose Sword he brought from the cave in the Mountain Range, but they are unable to use it efficiently (due to their Object Authority being too low to wield the sword properly and use Sword Skills with it). He helps Kirito look for Selka when she heads for the cave where Alice touched the ground of the Dark Territory and fights the Goblins in the cave, but is gravely injured. Kirito and Selka save his life by Selka using a Sacred Art to transfer Life from Kirito to him and, after two days, he returns to his task of cutting the Gigas Cedar. He finds it easier to wield the Dragon Bone Axe, so Kirito attempts to use his Sword skills with the Blue Rose Sword again, this time, successfully. Eugeo watches this in amazement and asks Kirito to teach him the Aincrad style. With Kirito's assistance he manages to master the use of the Horizontal Sword Skill and cut the Gigas Cedar in the process in just five days. On the festival organized to celebrate his feat, he reveals that he wants to be a swordsman and leave the village, but is challenged by Jink, the town guard, to a duel to decide who will leave the village. With Kirito's advice and his own experience, he easily defeats Jink using Slant, a Sword skill he learned on his own, and with Kirito they depart to Zakkaria.

    Alicization RunningEdit

    Since leaving the village, Eugeo and Kirito have been working as stable-boys in the «Wolde Farm» on the west outskirts of Zakkaria for about 5 months, training and waiting for the tournament. On the 28th Day of the 8th Month, the day of the tournament, Kirito and him are about to enter the West gate of the town a when a horse goes wild and charges them but fortunately they are able to calm it down and discover the cause of its distress to be a «Large Marsh Horsefly». Kirito gives his suspicions on why one is so far from the nearest swamp and warns him to be wary of future incidents.

    As the pair stop to get some food, Eugeo gets a bit nervous from seeing more people than he is used to in Rulid Village but Kirito tries to get him to loosen up. After signing up for the tournament, both of them enter the tournament restroom and after scouting quickly they are relieved that none of the participants are female. While they prepare Kirito comes up to him and warns him of one of the participants named Egome Zakkalight, whose personality is similar to Jink's.

    Both Eugeo and Kirito are able to be in different blocks during the tournament and are somehow able to pass the preliminaries, win the tournament in their respective blocks, and both become guards. By next spring, each of them receive letters of recommendations to attend the Sword Mastery Academy. After they enter, he becomes the valet of the 3rd best swordsman in the academy, Gorgolosso Baltoh.

    One and a half year has passed since the tournament. After practice, he talks with Kirito during dinner and later helps him with the plants he is growing, where he asks about what will Kirito do after recovering his memory. After Kirito asks for his sword, he reminds him that the next day, March 6, something important was going to happen.

    The next day was a rest day, so they went to the city and visited Sadore's shop in the 7th district of North Centoria, Sadore gives Kirito the sword he crafted from the branch of the Gigas Cedar. After Kirito takes the sword they return to the academy.

    Later he hears some commotion, and discovers that Kirito was going to face Uolo Levanteinn the head Elite Swordsman-in-Training of the Academy in a duel. After the duel, he is invited, along with Gorgolosso, to Sortiliena's room to celebrate Kirito's duel.

    A few months later, Eugeo ranked as an Elite-Swordsman-in-Training in the Academy, and is about to dismiss Tieze, his valet, when he sees Kirito's valet, Ronye, waiting for her mentor to dismiss her, and offers her to request a change of her mentor, as he sees that Kirito isn't a good example. She declines and, at that moment, Kirito enters from the window with a bag of honey pies for them and dismisses their valets by telling them to share the pies with their roommates.

    Alicization TurningEdit

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    After Tieze and Ronye were dismissed, Eugeo reminded Kirito about an advanced Sacred Arts exam that they were going to have the next day and that Kirito had not studied for it yet. While Kirito studied, Eugeo decided to practice in the arena that was exclusive for elite swordsmen.

    When Eugeo arrived at the arena, he found Raios and Humbert practicing. After a while of practice, they started mocking Eugeo about his lack of style and mockingly invited him to duel them, but to the nobles' surprise, Eugeo agreed to duel with Humbert, while Raios was left as the referee of the duel. Eugeo managed to make Humbert stumble by connecting two skills and repelling his attack. At this point, Raios stopped the duel before Eugeo was able to land the final strike.

    Vol 11 - 002-003


    Days later, Eugeo had a picnic with Kirito, Ronye and Tieze where the latter two told their mentors about the difficulties that their friend, Frenica Szeski, was having as Humbert's valet, since he was venting his anger of his duel with Eugeo being a draw on her. Eugeo immediately went with Kirito to talk with Raios and Humbert about the issue, but the two nobles played dumb and provoked Eugeo to mention how improper it was for Humbert to ask his valet to undress to her underwear. This was what the two nobles were waiting for, as Eugeo himself had undressed in front of his mentor many times for his mentor to inspect Eugeo's muscle development. After Raios and Humbert made fun of this, Kirito and Eugeo left with a supposed improvement achieved, as Humbert and Raios left them alone for awhile.

    Two days later, the 22nd of the 5th month, was a stormy day and the time for Eugeo and Kirito's weekly sword maintenance in their rooms. As the four-thirty bell rang, they realized that Ronye and Tieze were late for their usual 4 o'clock room cleaning. Eugeo waited in the room while Kirito went out to look for them. But, moments later, Frenica knocked at the door and, to Eugeo's surprise, told him that Ronye and Tieze had gone to Raios and Humbert's room to complain about their actions, because they did not stop harassing her. Having a bad feeling, Eugeo rushed to the room of the nobles, but forgot to leave his sword. With no time to spare, he carried it along.

    Vol 11 - 004-005

    Eugeo's hesitation.

    At Raios and Humbert's room, Eugeo found the two nobles drunk. They took him to one of their rooms where they had Ronye and Tieze bound to the bed, since the two wanted to make him watch as they raped the girls as "punishment" for offending them. Eugeo fought with his conscience and his inability to go against the Taboo Index, while the pain in his right eye increased as he watched the elites' actions. With Tieze's last scream before they were raped, Eugeo finally built up the willpower to go against the rules and attacked the nobles, unintentionally cutting Humbert's arm in the process, while his own right eye was blown away. After this attack, Raios decided to execute him for the crimes of interrupting the punishment and harming Humbert, while Eugeo was unable to resist due to his state of shock, though at the last moment, he was saved by Kirito, who blocked the attack.

    Alicization RisingEdit

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    Alicization DividingEdit

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    Alicization UnitingEdit

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    While battling with Kirito, Eugeo was able to regain his sense of self. His attempt to strike down Quinella cost him his life and half of the Blue Rose Sword, though he was able to fuse the last of his soul with the sword to temporarily transform it into the Red Rose Sword. With this sword, Kirito defeated Quinella at the cost of his right arm. After the battle, the sword reverted to its original broken form, and Eugeo died.



    See Eugeo/Image Gallery



    Major Characters
    Alice Schuberg - Asuna - Eugeo - Kayaba Akihiko - Kikuoka Seijirou - Kirigaya Suguha - Kirito - Klein - Lisbeth - Silica - Sinon - Yui
    SAO Players
    Aincrad Liberation Force/ALS Joe - Kibaou - Kobatz - Thinker - Yulier
    Divine Dragon Alliance/DKB Lind - Schmitt - Shivata - Yamata
    Fuumaningun Isuke - Kotaru
    Fuurinkazan Dale - Dynamm - Harry One - Issin - Klein - Kunimttz
    Golden Apple Caynz - Grimlock - Griselda - Schmitt - Yolko
    Knights of the Blood Asuna - Daizen - Godfree - Heathcliff - Kirito - Kuradeel
    Laughing Coffin Johnny Black - Kuradeel - PoH - Shinkawa Shouichi
    Legend Braves Beowulf - Cu Chulainn - Enkidu - Gilgamesh - Nezha - Orlando
    Moonlit Black Cats Ducker - Keita - Kirito - Sachi - Sasamaru - Tetsuo
    Titan's Hand Rosalia
    Others Agil - Argo - Ashley - Coper - Diavel - Kashiwazaka Hiyori - Lisbeth - Morte - Nishida - Rossa - Sasha - Silica
    Beta-Tester Argo - Coper - Diavel - Morte - Kirito
    NPC Angel - Kizmel - NPC Orchestra - Pina - Ruru - Tilnel - Yui
    Non-Canon Aaaa - Leafa - Philia - Sinon - Strea - Yuuki
    ALO Players
    Cait Sith Alicia Rue - Silica - Sinon
    Gnome Agil - Tecchi
    Imp Yuuki
    Leprechaun Lisbeth - Talken
    Pooka Sasha
    Salamander Eugene - fastuosa - Gtacs - Jun - Kagemune - Klein - Mortimer - UxperXJ
    Spriggan Kirito - Kuro - Nori
    Sylph Erika - Leafa - Recon - Sakuya - Sigurd
    Undine Asuna - Chrysheight - Siune - Thinker - Yulier
    NPC/Navigation Pixie Angel - Leviathan - Nerakk - NPC Orchestra - Pina - Skuld - Thrym - Thor - Tonkii - Urðr - Verðandi - Yui
    Others Ashley - Marinca - Saitou Shouichi - Sugou Nobuyuki
    Non-Canon Argo - Philia - Rain - Seven - Strea - Sumeragi
    GGO Players
    Dyne's Squadron Arashi - Dyne - Ginrou - Jin - Miso - Sinon
    BoB Participants Blackwood - Colonel Liberty - DA*LU - Dyne - E.J. - Fernil - Garrett - huuka - Jack Reacher - JIGEN - Kakouton - kaeeeede - Kakameposu the II - Keith - Kirito - Lion King Richie - Masaya - Musketeer X - No-No - Pale Rider - Pancho - Raiden - Licoco - Setsugekka - Shishigane - Sinon - Sterben - Stinger - Subtilizer - Ten-Q - Uemaru - Yamikaze - XeXeeD - XYZ
    Death Gun Victims Garrett - Pale Rider - Usujio Tarako - XeXeeD
    Others Behemoth - Spiegel
    Underworld Resident
    Human Empire Rulid Village Alice Schuberg - Bercouli - Doyke - Eugeo - Garitta - Gasupht Schuberg - Jink - Kirito - Nigel Balbossa - Orick - Sadina Schuberg - Selka Schuberg - Sister Azariya
    Zakkaria Banou Wolde - Egome Zakkalight - Kelgam Zakkalight - Telin Wolde - Telulu Wolde - Toriza Wolde
    Centoria Azurika - Cardinal - Quinella - Sadore
    Sword Mastery Academy Azurika - Eugeo - Frenica Szeski - Gorgolosso Baltoh - Humbert Zizek - Kirito - Raios Antinous - Ronye Arabel - Sortiliena Serlut - Tieze Shtolienen - Uolo Levanteinn - Zobun
    Central Cathedral Cardinal - Charlotte - Chudelkin - Elevating Operator - Fizel - Linel - Quinella
    Integrity Knight Alice Schuberg - Bercouli - Dakira - Deusolbert - Eldrie Woolsburg - Eugeo - Fanatio - Fizel - Giro - Hobren - Jeis - Linel
    Dark Territory Black Iums D・I・L - Fu・Za - Iskaan - Shasta
    Orcs Lilpyrine
    Giants Shigrokshik
    Goblins Oroi - Ugachi
    From RW Rath Kirito
    Glowgen DS Gabriel
    Reality/Other Games
    Rath Aki Natsuki - Higa Takeru - Koujiro Rinko
    Others Cel - Clovis - Doctor Kurahashi - Endou - Kirigaya Midori - Konno Aiko - Merida - Sada Akiyo - Yuuki Kouichirou - Yuuki Kyouko - Yuuki Shouzou

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