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Hosaka Carina Tomo (帆坂 カリーナ 朋, Hosaka Karīna Tomo?), known as Argo (アルゴ, Arugo?) in «Sword Art Online» (SAO), is a supporting character in the Aincrad Arc and the Unital Ring Arc. She was an SAO beta tester and is one of the 10,000 players who were trapped in Sword Art Online, where she worked as an information broker and was known by the nickname Argo the Rat (鼠のアルゴ, Nezumi no Argo?) due to the whiskers painted on her face in the beta test that eventually became her trademark.[5] Although she was infamous in the game as a person who sold almost anything that could be given a price tag,[5] Argo also distributed both strategy guides for less experienced players to help them survive the game, and information on bosses from the beta test free of charge[6] with money she earned from selling her guidebooks to Clearers.[7] Aside from her information broker business, Argo also worked as a messenger between players.[8]

Spoiler Alert! [show]
After Sword Art Online was cleared, Tomo enrolled at a high school in her hometown in the southwest of the Kanagawa prefecture and became a writer and researcher for MMO Today. In late September, 2026, Tomo transferred to the SAO Survivor School[3]


Sword Art Online[]

Argo Full Appearance - Progressive manga c20.png

Argo is a nimble-looking player[8] who has brown eyes[9] and curly golden-brown hair.[8] She wears full-body cloth and leather armour,[8] a hooded cloak and also has whiskers on her face,[8] which were originally a mark from a quest, but now a makeup of her choice.[5] Her weapon of choice are claws, which she hangs at her left waist.[8] She also uses Throwing Picks, which she hangs on her right waist.[8]

ALfheim Online (Lost Song)[]

NonCanonAlert.png Non Canon: Some or all events and details given in this section, may be considered non-canon to the main story.

Argo's ALO avatar for Sword Art Online: Millennium Twilight

In the non-canon game adaptations Sword Art Online: Lost Song and Accel World VS Sword Art Online: Millennium Twilight, Argo plays ALfheim Online as a Cait Sith. Her avatar has blonde hair and yellow-green eyes, a new outfit similar to that worn by her SAO avatar, and a pair of wrist-mounted blades as weapons.[10]


Argo is a completely business-focused person, with people saying that she would sell her own stats or grandmother for Cor. Nonetheless, Argo has certain principles: she refused to provide anyone with the names of SAO beta testers as it would endanger the players, and she has been known to honor her debts, as was the case with Kirito saving her from the ninja clan. She is so focused on completing her field guides that it sometimes gets her into trouble.[citation needed]


Argo's whiskers were originally a mark written on her face when she tried to complete the quest that awards the «Martial Arts» Extra Skill. Unable to complete the quest, the mark remained on her face throughout the entire «SAO Closed Beta». She reapplied a similar makeup on the official server service.[5]


Aincrad Arc[]

Aria of a Starless Night[]

Argo was first introduced as the beta tester who served as a middleman between Kirito and a prospect buyer of his «Anneal Blade +6». She was later revealed to have assisted players by creating the guide book, «Strategy Guide by Area», a pamphlet freely distributed in NPC shops. Inside were hunting locations and other useful information pertaining to staying alive in the death game.

After the 1st Floor boss battle, as Kirito declared himself a Beater and took the hate towards beta testers, which was re-sparked by Argo's information guide on the boss having been incorrect due to changes before the official release, upon himself, Argo promised that she would disclose any information with him for free. He then asked for the reason behind her whiskers.

Reason for the Whiskers[]

When Kirito opened the gate to the 2nd Floor, he noticed Argo running away from two players. He ran after them, using his Tracking Mod to stay close behind. After catching up, he realized that the two players were dressed in a ninja-like outfit. They were asking Argo about a quest on the 2nd Floor that she refused to sell.

At this time, Kirito revealed himself and jumped in-between Argo and the two players. The two eventually ran away after they realized that a large cow mob was behind them which chased after them for some distance. Argo thanked Kirito for helping her, and said that rather than telling Kirito about why she wears the make-up, she would show him, which will also show Kirito the quest that the two "ninjas" wished to have. After Kirito promised that he would not hold a grudge against her no matter what happens, Argo showed him the quest NPC and he accepted the quest given, which was to break a rock that was near unbreakable. However, as he had already accepted the quest, the NPC was prompted to mark his face with whisker-like markings until he could successfully split the rock in half and thus complete his quest. He realized that the reason why Argo kept the markings, even after the Beta test period, was because it had become a part of her image. He eventually broke the rock after three days and three nights.

Rondo of a Fragile Blade[]

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Concerto of Black and White[]

At around 11:55 P.M. on December 18, 2022, Argo met with Kirito at the staircase connecting the 3rd Floor to the 2nd Floor. After accepting his payment for her services, she disclosed that Morte was the only player who had joined the Dragon Knights Brigade (DKB) since the opening of the 3rd Floor. Argo added that the Dragon Knight lineup at the 3rd Floor strategy meeting had not changed since 2nd Floor boss fight. Thus, Morte had been absent from the debate, though Argo had been unable to determine the reason for this.

When Kirito inquired how Morte had managed to enter the guild, Argo divulged that Morte had contacted Lind directly to request this, and was subsequently introduced to the other main guild members the day after the 3rd Floor was opened. She also revealed that she had not actually seen Morte in person, nor had she seen anyone matching his description while watching the pub the Dragon Knights Brigade was using as a base in Zumfut. Speculating that Lind was using Morte as a secret weapon against the Aincrad Liberation Squad, she promised to observe him if he appeared at the 3rd Floor boss raid.

Before leaving, Argo requested Kirito to disclose what lodging place he was using with Asuna since their arrival on the 3rd Floor. Upon him refusing this request, she noted that he had not immediately denied that he was sharing living quarters with Asuna, though she assured him she would not be selling that bit of information.

Barcarolle of Froth[]

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Scherzo of an Abyssal Dusk[]

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Red-Nosed Reindeer[]

About the time of Christmas Eve, 2023, Argo provided information on the possible location of Nicholas The Renegade, the Christmas event boss, to Kirito. Afterwards, she sold the information about Kirito purchasing the information about the boss to Klein, while, later, Kirito also bought information about Klein buying information about his recently purchased information.

The Day Before[]

While investigating newly appearing quests of a mysterious nature, Argo picked up a quest on the 22nd Floor. A key character in the quest was a dog, which Argo had problems with, so she out-ran the dog, and proceeded to a log house. The house was then pulled up by a tornado, and was suspended near the top of floor. She was trapped there for two days, before Kirito and Asuna came by looking for the house that she was trapped in. Asuna was the first to become aware of the house floating above the ground, and Kirito realized that someone was waving their hand out the house. They were unable to determine if the person was a player, or NPC, until Argo tossed out a used healing potion, which indicated that the person trapped above was a player.

Deciding to help whoever was trapped above, Kirito and Asuna attempted to reach the point that was directly beneath the house. They came upon a tall tree. A dog then appeared, and Asuna picked it up, causing the two to be swept up by a tornado, and end up inside the house with Argo. Argo complained that they were not supposed to come up there with her, but explained her situation, and the two were pulled into a quest that she was doing. Kirito realized that she out-ran the dog, as she was bad with dogs, but that caused the quest to become stuck. Argo realized that the house they were in was moving, and eventually came upon an area on the 22nd Floor that was unreachable by foot. After meeting three NPCs: a tin-man, a lion, and a scarecrow, Argo and Asuna realized that this quest was based on the «Wizard of Oz».

Deciding to skip the sub-quests, Argo and Asuna decided to go straight to the Witch's Castle, which they managed to pass through easily, due to their much higher levels than the quest was made for. After defeating the Witch and returning from the quest, Argo promised not to tell anyone about Kirito and Asuna's marriage, which she figured out on her own.

November, 2024[]

Argo was among the remaining 6,147 players logged out of the death game after Kirito killed Heathcliff, prematurely clearing the game.

Unital Ring Arc[]

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See: Hosaka Carina Tomo/Image Gallery


  • Argo nicknamed Asuna as Aa-chan (アーちゃん?) and Kirito as «Kii-bou» (キー坊?) or «Kiri-bou» (キリ坊?). [† 2]
  • Argo usually refers to herself using one of two first-person dialectal masculine pronouns: Orecchi (オレっち?) or Oira (オイラ?).[11][† 3]
  • Argo was Kirito's second-ever contact on his friend list (after Klein).[12]
  • Argo ends her sentences with a special nasal inflection.[8][† 4]
  • Argo is afraid of dogs.[13]
  • Argo is the first canon Sword Art Online player to be included in Lost Song without having been confirmed as an ALfheim Online player in the canon timeline.[10]
  • Tomo was confirmed to be half-Japanese by the author.[1]


  1. This entry is based on a tentative list by the author that has neither been confirmed nor denied as final.
  2. Bou (?) is similar to chan (ちゃん?), except that it is usually only used for boys. It is a diminutive, usually used for babies and children.
  3. Both of these pronouns are variants of the standard Japanese casual masculine pronoun Ore (?).
  4. The inflection is represented as the last syllable/word in her sentence being written in katakana in the raw. An equivalent in English is to capitalise the last letter of the word.



Major Characters
Alice Zuberg - Asada Shino (Sinon) - Ayano Keiko (Silica) - Eugeo - Kayaba Akihiko - Kikuoka Seijirou - Kirigaya Kazuto (Kirito) - Kirigaya Suguha (Leafa) - Shinozaki Rika (Lisbeth) - Tsuboi Ryoutarou (Klein) - Yui - Yuuki Asuna (Asuna)
SAO Players
Aincrad Liberation Force/ALS Hokkaiikura - Joe - Kibaou - Kobatz - Liten - Melonmask - Okotan - Schinkenspeck - Thinker - Yulier - Yakumo
Divine Dragon Alliance/DKB Buxum - Hafner - Lind - Morte - 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 - Nautilus
Laughing Coffin Johnny Black - Kuradeel - Kuro - PoH - XaXa
Legend Braves Beowulf - Cu Chulainn - Enkidu - Gilgamesh - Nezha - Orlando
Moonlit Black Cats Ducker - Keita - Kirito - Sachi - Sasamaru - Tetsuo
Titan's Hand Rosalia
Two-Handed Builders Agil - Lowbacca - Naijan - Wolfgang
Others Argo - Ashley - Ceba - Coper - Diavel - Gin - Gwen - Kein - Lisbeth - Lux - Mina - Nishida - Rossa - Ryufior - Sasha - Silica - Yuna
Beta Testers Argo - Coper - Diavel - Isuke - Kotaru - Morte - Kirito
NPC Angel - Kizmel - Leyshren Zed Yofilis - Lion - Myia - NPC Orchestra - Pina - Ruru - Scarecrow - Theano - Tilnel - Tin - Toto - Yui
Non-Canon Aaaa - Alberich - Leafa - Philia - Rain - Sinon - Strea - Yuuki
ALO Players
Cait Sith Adie - Alicia Rue - Silica - Sinon
Gnome Agil - Tecchi
Imp Yuuki
Leprechaun Ceba - Granze - Lisbeth - Talken
Pooka Sasha
Salamander Eugene - fastuosa - Gtacs - Jun - Kagemune - Klein - Mortimer - UxperXJ
Spriggan Kirito - Kuro - Nori
Sylph Erika - Fukaziroh - Leafa - Lux - Recon - Sakuya - Sigurd
Undine Asuna - Chrysheight - Siune - Thinker - Yulier
NPC/Navigation Pixie Angel - Emely - Hraesvelg - Leviathan - Nerakk - NPC Orchestra - Pina - Skuld - Thiazi - Thor - Thrym - Tonky - Urðr - Verðandi - Yui
Others/Unknown Ashley - Fairy King Oberon - Garnet - Gwen - Marinca - Saitou Shouichi - Slug Researchers
Non-Canon Alice Zuberg - Argo - Black Lotus - Eugeo - Heathcliff - Persona Vabel - Philia - Rain - Sachi - Seven - Strea - Sumeragi - Yuna
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 - Usujio Tarako - Yamikaze - XeXeeD - XYZ
Death Gun Victims Garrett - Pale Rider - Usujio Tarako - XeXeeD
Squad Jam Participants KKHC Shirley
LPFM Fukaziroh - LLENN - M - Pitohui
MMTM Bold - David - Jake - Kenta - Lax - Summon
Narrow Dashin - Hidehide - Nagama - Nobu - Saika - Yasu
SHINC Anna - Eva - Rosa - Sophie - Tanya - Tohma
ZAT Benjamin - Casa - Frost - Koenig - Yamada - Let's Play Host
ZEMAL Heuy - Max - Peter - Shinohara - Tomtom
Others Clarence
Other main series characters Behemoth - Spiegel
AGGO manga original characters Batian - Boss - Costa - Lorosae - Panama - Rio
Underworld Resident
Human Empire Rulid Village Algu - Alice Zuberg - Bercouli - Donetti - Doyke - Eugeo - Garitta - Gasupht Zuberg - Ivenda - Jaina - Jink - Kirito - Nigel Balbossa - Orick - Ridack - Sadina Zuberg - Selka Zuberg - Sister Azalia - Sulinea
Zakkaria Banou Wolde - Egome Zakkarite - Kelgam Zakkarite - Telin Wolde - Telulu Wolde - Toriza Wolde
Centoria Azurica - Cardinal - Quinella - Sadore
Sword Mastery Academy Azurica - Eugeo - Frenica Szeski - Golgorosso Balto - Humbert Zizek - Kirito - Raios Antinous - Ronye Arabel - Sortiliena Serlut - Tiese Shtolienen - Volo Levantein - Zobun
Central Cathedral Cardinal - Charlotte - Chudelkin - Elevating Operator - Fizel - Linel - Quinella
Integrity Knight Alice Zuberg - Bercouli - Dakira - Deusolbert - Eldrie Woolsburg - Eugeo - Fanatio - Fizel - Giro - Hobren - Jeis - Linel - Renly - Scheta
Dragons Amayori - Himawari - Hinageshi - Hoshigami - Kazenui - Shimosaki - Takiguri - Tsukigake - Yoiyobi
Others Almera Woolsburg - Eschdol Woolsburg
Dark Territory Black Iums D.I.L - Dampe - Fu Za - Iskahn - Lengil Gira Scobo - Lipia Zancale - Vixur Ul Shasta - Yotte
Orcs - Renju - Rilpirin
Ogres Furgr
Giants Sigurosig
Goblins Aburi - Hagashi - Kosogi - Kubiri - Oroi - Shibori - Ugachi
Underworld Visitors
Agil - Alicia Rue - Asuna - Eiji - Eugene - Gabriel Miller - Hirono Takashi - Jun - Kirito - Klein - Leafa - Lisbeth - Moonphase - Nori - Sakuya - Silica - Sinon - Siune - Tecchi - Vassago - YUNA
Asuka Empire
Players Clevel - Koyomi - Merida - Nayuta - Ran - Yanagi - Yuuki
NPC Clovis (AI)
Staff Torao
Reality/Other Games
Rath Aki Natsuki - Higa Takeru - Hiraki - Ichiemom - Kikuoka Seijirou - Koujiro Rinko - Nakanishi - Niemom - Yanai
Others Alicia Klingerman - Cel - Clovis - Critter - Doctor Kurahashi - Eiji - Endou - Fujita Shin - Kirigaya Midori - Okano Kouji - Oosawa Mizue - Oosawa Sachie - Sada Akiyo - Satou Rei - Shigemura Tetsuhiro - Yuna - Yuuki Kouichirou - Yuuki Kyouko - Yuuki Shouzou
Non-Canon Gattas - Genesis - Laraiah - Premiere - Richter - Sigil - Tia