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Strea (ストレア, Strea?) is an original Sword Art Online game character and one of the central characters in Infinity Moment and Hollow Fragment. In ALfheim Online, Strea is a Gnome.[3]


Infinity Moment/Hollow Fragment Avatar[]

Strea's Infinity Moment and Hollow Fragment avatar has lavender hair which goes down to the base of her neck with two long strands on either side of her head which go down to the top of her breasts. She has two freckles on her left breast inside her cleavage. Her eyes are red-violet. Strea wears a lilac-color, strapless dress with a black piece of fabric going across the breasts and down to her stomach, below an intricate coat. This coat is made up of violet and plum shaded components, reaching as far down as the hem of her dress but also leaving some areas open which expose the dress below. Above that she wears a collar of the same violet of her coat, outlined in lavender with a red jewel securing the collar in place. It appears that the components that go over her detached black sleeves are connected to this collar. These components that go over the black sleeves appear to cover them completely except for at the wrist and hand where it joins to her finger. She wears plum stockings with whorls etched on. They go up under the dress and are connected by something triangular. Strea's main weapon of choice is a large, purple two-handed blade with silver edges called «Invaria»[citation needed].

Lost Song Avatar[]

Strea's ALfheim Online avatar has brown hair, red eyes, and an outfit that resembles her Sword Art Online outfit.[3].

Strea's Hollow Fragment main weapon is also present in the game, but this time under the name of «Dragvandil».


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Strea usually acts cheerful, straightforward, and innocent, leading to moments of social ignorance, such as unwittingly causing concern among Asuna, Lisbeth, and Silica when Strea had Kirito let her sit on his lap, or asking if she could see Asuna and Kirito's room after Asuna angrily asked Kirito to speak in her room privately as a result of the lap incident.


Infinity Moment/Hollow Fragment[]

Strea started tailing Kirito after the events of the 75th Floor's Boss fight. She did so without him noticing, even with his high-level detection skill. Although his skill could not detect anything, he could feel her presence and, eventually, forced her to reveal herself. Strea greeted him with a smile and introduced herself, though she did not tell Kirito the reason why she had been tailing him in the first place.

Throughout the story, Strea would be seen in the Labyrinth searching for «something». She would claim that this «something» was important, but she had no idea what it was or what it looked like. She would also occasionally experience headaches, which would become stronger the further the Clearers advanced in reaching the top floor. After getting close to the 100th Floor, Strea joined the Clearing group in subduing the Floor Boss and had a severe headache, before suddenly changing her personality and disappearing into thin air.

Strea reappeared on the following floors, attempting to prevent Kirito and the others from completing the game. She reappeared after Alberich attempted to eliminate all the players, except for Asuna, from the game by using a special blade that held an incurable poison, which would slowly kill anyone who was injured by it. Protecting Kirito from getting hit, Strea slowly succumbed to the blade's poison until she surprisingly fused with the «Hollow Avatar» and disappeared.

Strea was later revealed to actually be a mental-health program, similar to Yui, who was somehow able to appear using an unused avatar that was still registered in Aincrad. However, the near-death experience had slowly altered her data and resulted in her fusion with the «Hollow Avatar». Vowing to rescue her, Kirito and the group agreed to save Strea by reaching the 100th Floor.

After defeating the Hollow Avatar and the other mental-health programs, Strea appeared in a large monstrous form and attempted to eliminate the Clearing group. Her defeat led to Aincrad being cleared and her temporary freedom. Strea slowly disappeared as her fusion with the Hollow Avatar had revealed her true identity as a mental-health care program in the game, and led to her returning to her true form. At the last minute, Yui absorbed Strea's program and assured the rest of the group that she was still alive.

Heathcliff (Kayaba Akihiko) reappeared shortly afterwards to congratulate the group for making it all the way to the end, and explained that the cause of the glitch which resulted in his disappearance was partly due to Strea accumulating all the negative emotions from the players, which accidentally "overloaded" the game for a brief period of time.

Alternative Re: Hollow Fragment Route[]

In a side quest that can ultimately change Strea's outcome, before facing the 100th Floor Boss, Yui devised a plan to create an "Advanced Difficulty Test" that Kirito could take, hoping that the setting of the test, which was similar to how Kirito was first pulled into the Hollow Area, would free Strea from the avatar of the boss. Although Kirito managed to make it all the way to the final boss of the test, he was exhausted and almost struck down, when Strea suddenly teleported in and saved Kirito in time.

After defeating the boss, both Kirito and Yui came to see Strea in the Administration Area, only to learn that she was the Hollow copy of Strea and not the original. Because she was not the original, Hollow Strea could not teleport with Kirito out of the Hollow Area until Yui came up with another idea, albeit one that made her worry. If they were to use the main console that was in the underground area of the Administration Area, they could use a data transfer that would swap the original Strea with her Hollow self.

Although Kirito was uneasy at first because this would be dangerous, Hollow Strea convinced him to let her go through with it and the transfer was a success, bringing the real Strea back to Kirito's side. They then returned to Aincrad together, where Strea greeted all of her friends with her famous super strong hugs and bright cheery personality. They then proceeded together to free Hollow Strea from the boss avatar, knowing that she would be sent back to the Hollow Area the minute the boss was defeated. In the aftermath of the boss battle on the 100th Floor, the system allowed Strea to become an item that Kirito could take with him and Yui to ALfheim Online (ALO), thus unlocking Strea's alternate ending of her and Yui playing with Kirito and Asuna in ALO, dressed in their Lost Song outfits.


See: Strea/Image Gallery


  • Strea considers Yui to be her older sister.
  • Strea has a Navigation Pixie form in Lost Song.
  • In Lost Song, Strea displayed great sewing skills by hand-crafting Asuna a pair of underwear, and various school uniforms for the girls in a later event.
  • Strea's voice actress also voices Kuroyukihime, an Accel World character who appears as a guest character in Lost Song.[4] Strea's avatar in Lost Song was also the one hacked for Kuroyukihime to appear and challenge Kirito.



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