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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
Theme: Video GameVideo Game
Duration: 26 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.121 (scored by 2013120,131 users)
1 indicates a weighted score.
Ranked: #36642
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #3503
Members: 41,307
Favorites: 71

Available At


Streaming Platforms

Ranked #3664Popularity #3503Members 41,307
Add to My List
Episodes: /3


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?

Characters & Voice Actors






Honna, Youko


Namikawa, Daisuke


Tadano, Youhei


Usui, Hisato
Yukawa, Jun


Opening Theme

Apple Music
Amazon Music
Youtube Music
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

Episode Videos


Feb 4, 2017
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 ...
Aug 19, 2016
As a viewer who has never actually seen most of the .hack// series I decided to view .hack//Quantum as a way to get me interested in the rest of the series. In short, I would say that yes I am interested in the rest of the series. And I would definitely recommend to a friend who was interested in seeing new anime or in watching the rest of the series itself like me.

However, as many other reviews for this anime have stated .hack//Quantum does not seem to stand up to the rest of the series as a whole and I might recommend for a viewer ...
May 30, 2017
Mixed Feelings
.hack//Quantum is an great example of a show that is fantastic on the surface level but is held back by poor, and at times nonsensical and confusing, storytelling.

A summary of the opening episode is this: Three high school girls are playing a generically named anime cliche, "The World". They see a guild get taken out by a really OP boss monster and the stupid lovable main character girl picks up some unnamed item. They log off. The MC girl logs back in alone the next day to find that, for some reason, she is being hunted by a gang of nameless videogame mercs. While ...

Interest Stacks

19 Entries · 19 Restacks
by verimpa
16 Entries · 38 Restacks


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

This anime is above average
W3TFT - Feb 23, 2022
0 repliesby W3TFT »»
Feb 23, 2022 7:04 PM
Poll: .hack//Quantum Episode 3 Discussion
tsubasalover - Apr 7, 2011
45 repliesby RafaelDeJongh »»
Oct 2, 2020 11:14 PM
Poll: .hack//Quantum Episode 1 Discussion ( 1 2 )
tsubasalover - Jan 29, 2011
51 repliesby zetsu_shoren »»
Mar 19, 2016 1:09 PM
Poll: .hack//Quantum Episode 2 Discussion
tsubasalover - Feb 25, 2011
19 repliesby haydnwright »»
Nov 9, 2014 8:54 AM
Photo-senso thing !?
gargS - Apr 21, 2013
0 repliesby gargS »»
Apr 21, 2013 12:44 AM

The Profound Beauty of the .hack//SIGN OST Music

The Profound Beauty of the .hack//SIGN OST Music

Although it was never the most popular, the .hack anime possesses some of the most memorable music in any anime. If you’ve never given .hack a try, its OST is the best place to start.

by samcook