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Gaku Iwasa

Producer · Born February 5, 1974 (52) · Yokohama, Kanagawa Prefecture, Japan

Gaku Iwasa (岩佐 岳, also known as 岩佐 がく, Iwasa Gaku, February 5, 1974) is a Japanese animation producer. He is the CEO of of White Fox. He joined OLM while he was still in school. In 2007, he established White Fox independently from OLM.

Biography from TMDB.

Born
February 5, 1974 (52)
From
Yokohama, Kanagawa Prefecture, Japan
Works as
Producer
Titles
15 on MovieCove · 21 credits in all
Links
IMDb (opens in a new tab)TMDB (opens in a new tab)Official site (opens in a new tab)Wikidata (opens in a new tab)

Known for

TMDB popularity, last 65 days to Oct 28Up 41% in 30 days

What are Gaku Iwasa's films like?

Across their 5 MovieCove titles with a thematic analysis, their films lean Survival and Morality.

Themes

share of theme weight
Survival
33%
Morality
21%
Society
14%
Self
14%
Bonds
11%
Ideas
7%
Community2 titles, browse their movies with this themeTrauma2 titles, browse their movies with this theme

What they feel like to watch

their average across 3 films
ToneFeelDemandtheir average · filled zone: the category
Stylized: How far its world departs from everyday reality. Browse their stylized movies.
Tone · Style
naturalisticheightened

Grounded 1 · Stylized 2 · Heightened 0

Charged: How hard the emotional peaks hit while you watch. Browse their charged movies.
Feel · Intensity
gentleintense

Gentle 0 · Charged 2 · Intense 1

Shifting: How much it swings between very different feelings. Browse their shifting movies.
Feel · Swings
steadyswings

Steady 0 · Shifting 3 · Whiplash 0

Straight-faced: How much of the runtime is played for laughs. Browse their straight-faced movies.
Feel · Humor
noneconstant

Straight-faced 2 · Some laughs 1 · Funny 0

Even-paced: How fast it moves from scene to scene. Browse their even-paced movies.
Demand · Pace
slowrelentless

Slow burn 0 · Even-paced 3 · Relentless 0

Engaged: How much focus it asks of you — look away and lose the thread? Browse their engaged movies.
Demand · Attention
casualfull focus

Casual 0 · Engaged 2 · Full focus 1

Heavy: How much it costs you emotionally; whether you need recovery time. Browse their heavy movies.
Demand · Emotional cost
easyheavy

A split, not a type: Easy watch 0 · Affecting 2 · Heavy 1

Open-ended: How much is left for you to interpret. Browse their open-ended movies.
Demand · Resolution
resolvedambiguous

A split, not a type: Resolved 2 · Open-ended 0 · Ambiguous 1

Moods and endings

endings are an aggregate; no title is named

Dominant moods · mentions across their titles

Tense
3
Melancholic
3
Thrilling
2
Hopeful
2
Dread
1
Other
1

How their films linger

Hopeful3 titles, browse their movies with this aftertasteRousing2 titles, browse their movies with this aftertasteHaunting2 titles, browse their movies with this aftertaste

How their films end

  • Happy1
  • Bittersweet3
  • Ambiguous1

AI-generated from each title's plot synopsis and cast list, with extra plot summaries, reviews and Parents Guide notes for titles the model may not know, and the model's own knowledge of the ones it recognizes. Only analyzed titles count, so this covers part of the filmography; the feel axes count films only for now.

Where can I watch Gaku Iwasa's films?

As of October 24, 2026, 14 of their 15 MovieCove titles stream on a subscription or free service, most on Crunchyroll (13).

Also on these channels

Subscription and free streaming for Gaku Iwasa's titles on MovieCove; rent and buy are not counted. Titles are listed by Midcredits score, highest first, at most 12 per service; a dashed chip is a producer credit or a minor one, such as a thanks. A service opens the browse page, which counts movies only, so its number can differ.

Filmography

21 credits, 15 with a MovieCove page.

  • Uglymug, Epicfighter(2025)

    Show 12 episodes · Production Supervisor

    Midcredits score: 12th percentile of all shows

  • Goblin Slayer: Goblin's Crown(2020)

    Producer

    Midcredits score: 73rd percentile of all films

  • Re: Zero kara Hajimeru Isekai Seikatsu: Hyouketsu no Kizuna(2019)

    Production Supervisor

    Midcredits score: 89th percentile of all films

  • Cautious Hero: The Hero Is Overpowered but Overly Cautious(2019)

    Show 12 episodes · Executive Producer

    Midcredits score: 73rd percentile of all shows

  • Goblin Slayer(2018)

    Show 12 episodes · Production Supervisor

    Midcredits score: 72nd percentile of all shows

  • Steins;Gate 0(2018)

    Show 23 episodes · Production Supervisor

    Midcredits score: 96th percentile of all shows

  • Peacemaker Kurogane: Omo-michi(2018)

    Producer

    Midcredits score: 67th percentile of all films (provisional, few ratings)

  • Girls' Last Tour (not in the MovieCove catalog yet)(2017)

    Show 12 episodes · Production Supervisor

  • Grimoire of Zero (not in the MovieCove catalog yet)(2017)

    Show 12 episodes · Production Supervisor

  • Matoi the Sacred Slayer (not in the MovieCove catalog yet)(2016)

    Show 12 episodes · Producer

  • Re: Zero - Starting Life in Another World(2016)

    Show 85 episodes · Production Supervisor

    Midcredits score: 92nd percentile of all shows

  • Akame ga Kill!(2014)

    Show 24 episodes · Producer

    Midcredits score: 85th percentile of all shows

  • Is the Order a Rabbit?(2014)

    Show 12 episodes · Producer

    Midcredits score: 48th percentile of all shows

  • Soni-Ani: Super Sonico The Animation (not in the MovieCove catalog yet)(2014)

    Show 12 episodes · Producer

  • The Devil Is a Part-Timer!(2013)

    Show 13 episodes · Producer

    Midcredits score: 70th percentile of all shows

  • Steins;Gate: The Movie - Load Region of Déjà Vu(2013)

    Producer

    Midcredits score: 97th percentile of all films

  • Jormungand(2012)

    Show 24 episodes · Producer

    Midcredits score: 74th percentile of all shows

  • Katanagatari (not in the MovieCove catalog yet)(2010)

    Show 12 episodes · Line Producer

  • Super Robot Taisen OG: Divine Wars(2006)

    Show Producer

    Midcredits score: 43rd percentile of all shows (provisional, few ratings)

  • Utawarerumono(2006)

    Show Producer

    Midcredits score: 46th percentile of all shows

  • Mizuiro (not in the MovieCove catalog yet)(2003)

    Show 2 episodes · Production Manager

Career shape

A full career of 16 titles from 2003 to 2025.

Biggest box office

Steins;Gate: The Movie - Load Region of Déjà Vu (2013)

$4.8M worldwide

Highest rated

Steins;Gate: The Movie - Load Region of Déjà Vu (2013)

Midcredits 97th

Most popular right now

Utawarerumono (2006)

By role

only this rolewith another role
Producing8 of 16: 8 only producing, 0 with another role · typical Midcredits score73rdOther crew8 of 16: 8 only other crew, 0 with another role · typical Midcredits score89th

By decade

2000s1 · crew2010s14 · crew2020s1 · crew

Counts from TMDB across their full career, self appearances out; a title counts in every role they held on it. The ring is the typical Midcredits score (the median percentile) of the role's titles that are on MovieCove, shown from 5 scored.

How do Gaku Iwasa's films land?

Their typical MovieCove film has a Midcredits score in the 81st percentile, the median of all 4; across a limited sample of 3 films with reception data, the typical film sits in the 75th percentile for acclaim.

Acclaim · how much people like their films

75thpercentile
Typical film, the median of 3

Approval · how many liked their films

68thpercentile
Typical film, the median of 3

Reach · how many have seen their films

87thpercentile
Typical film, the median of 3

Midcredits score across 15 titles, by percentile

  • 75th and up5
  • 50th to 74th6
  • 25th to 49th3
  • Below 25th1

Shape of the crowd

6 of their 15 titles are Crowd Pleasers.

  • Universally Loved2
  • Cult Classic1
  • Crowd Pleaser6
  • Mixed6

Most divisive · producer

Peacemaker Kurogane: Omo-michi (2018)

89th percentile spread · 26% rated it 4 or lower

Most loved · producer

Steins;Gate: The Movie - Load Region of Déjà Vu (2013)

Midcredits 97th · 87% liked

Percentiles are each film's standing among all films on MovieCove; the typical film is the median, so one outlier cannot drag it. Percentiles and reviewer scores count the films IMDb credits them on, for now; the Midcredits score bands, the shape of the crowd and the two cards count their MovieCove titles, shows included (a show ranked among shows), appearances as themselves left out. A descriptor is the shape of a title's IMDb rating distribution against the catalog; "most divisive" needs a spread wider than half of all titles, and a card names only a principal credit: a craft role, and on a show a crew role or a run of episodes, never a courtesy credit or a one-off guest spot.

Who does Gaku Iwasa work with?

People who share at least 2 of Gaku Iwasa's MovieCove titles, grouped by what they did on them; Masahiro Gotô shares the most, 3.

Actors

Editors

Producers