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Alternative Titles

Japanese: .hack//Quantum


Type: OVA
Episodes: 3
Status: Finished Airing
Aired: Jan 28, 2011 to Apr 7, 2011
Licensors: Funimation
Studios: Kinema Citrus
Source: Original
Genres: ActionAction, AdventureAdventure, FantasyFantasy, GameGame, Sci-FiSci-Fi
Duration: 26 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.161 (scored by 1835218,352 users)
1 indicates a weighted score.
Ranked: #30152
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #2821
Members: 37,561
Favorites: 64

External Links

Ranked #3015Popularity #2821Members 37,561
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Tobias, Mary, and Sakuya challenge the impregnable "The One Sin", but they lose their way in the maze and unintentionally trap other guild members. A mysterious cat is watching their blunder. Is it another player character or NPC?


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Episode Videos

Related Anime

Characters & Voice Actors






Honna, Youko


Namikawa, Daisuke


Iwasaki, Masami


Nozaki, Keiichi
Tachibana, Masaki
Director, Storyboard
Tanaka, Kazuya
Sound Director
Kawaguchi, Toshio
Episode Director


Opening Theme

No opening themes have been added to this title. Help improve our database by adding an opening theme here.

Ending Theme

"雫 -Shizuku-" by Yuuka Nanri

Jul 25, 2011
KC_Writes (All reviews)
I've been a fan of the .hack franchise for quite a long time. I came to it through .hack//Sign in high school and followed it into the games, exploring the other animes as they came out. So when I heard the announcement for .hack//Quantum I was very excited, but after the initial character design shots I was skeptical. Female characters of both Kite and Balmung, to me, screams unnecessary and pandering to fanboys; and adding a character whose literally Blackrose with a different hairstyle really annoyed me as it seemed extremely pointless and lazy. However I eventually downloaded them and sat down one evening to read more
Apr 10, 2012
artist-retired (All reviews)
The existence of .Hack//Quantum immediately brings up the question: How many damn times will Namco Bandai rehash the same story in the same franchise?

STORY: Once upon a time, there was a video game company that made a really popular online game called The World (Though in the real world, the game that is housed within the game has a very questionable popularity, as in does anyone really care for .hack anymore?), the game was an incredibly flawed game where hacking is the only way to do any cool shit, and strange phenomenons that cause people in real life fall unconscious into a coma like state, read more
Mar 12, 2013
ShadowBlazer3000 (All reviews)
Having followed .hack since the days of .hack//SIGN it's pretty safe to say I'm quite the fan of the franchise. I've seen every anime installment out there and I was actually excited for this. While mixed feelings of Kinmea Citrus taking over from longtime.hack// animation house Bee Train I was wondering how a new studio would take a new anime and I can say it's a fun and entertaining watch sure to be accessible to newcomers but may be a bit of a turn off for longtime watchers for my self.

Animation and art wise Quantum was certainly sporting production values lacking from some previous installments read more
Feb 4, 2017
Kakuman1995 (All reviews)
A complete newbie to .hack in all it's forms I went into this with no expectations aside from a few recommendations from friends after finishing up Log Horizon some time ago. I will also say this is my first ever real OVA experience which makes me a bit jarred by the necessities of storytelling in that medium.
I will say overall I enjoyed Quantum, a fun little, if dramatic and heartfelt journey that may not have left me with any real impression of whether or not I wish to continue with the franchise as a whole but certainly leaving me with a lot of enjoyment for read more

Recent News

FUNimation Entertainment Acquires Guilty Crown and .hack//Quantum

According to their official press releases, FUNimation has licensed Guilty Crown and .hack//Quantum. FUNimation will stream Guilty Crown as it airs in Japan and rele...read more

Staff of FREEDOM Produce New OVA Koisento

According to the official website, Bandai Visual's three new OVAs were announced to be premiered at Anime Fes. VS to be held on November 27th. The fourth title ...read more

Recent Forum Discussion

Poll: .hack//Quantum Episode 3 Discussion
tsubasalover - Apr 7, 2011
45 replies by RafaelDeJongh »»
Oct 2, 2020 11:14 PM
Poll: .hack//Quantum Episode 1 Discussion ( 1 2 )
tsubasalover - Jan 29, 2011
51 replies by zetsu_shoren »»
Mar 19, 2016 1:09 PM

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