Keiji Inai
Composer · Born March 17, 1976 (50)
Keiji Inai (井内 啓二, Inai Keiji, born March 17, 1976) is a Japanese composer and arranger. Real name: Hideo Inai (井内 求生, Inai Hideo).
Biography from TMDB.
- March 17, 1976 (50)
- Composer
- 28 on MovieCove · 32 credits in all
Known for
What are Keiji Inai's films like?
Across their 16 MovieCove titles with a thematic analysis, their films lean Bonds and Self.
Themes
What they feel like to watch
Ironic 1 · Wry 1 · Earnest 5
Light 4 · Serious 3 · Dark 0
Grounded 0 · Stylized 1 · Heightened 6
Gentle 0 · Charged 6 · Intense 1
Steady 1 · Shifting 5 · Whiplash 1
Straight-faced 0 · Some laughs 5 · Funny 2
Slow burn 1 · Even-paced 5 · Relentless 1
Casual 4 · Engaged 3 · Full focus 0
Easy watch 6 · Affecting 1 · Heavy 0
Resolved 7 · Open-ended 0 · Ambiguous 0
Moods and endings
- Happy8
- Bittersweet4
- Ambiguous3
- Cyclical1
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 Keiji Inai's films?
As of October 24, 2026, 25 of their 28 MovieCove titles stream on a subscription or free service, most on Crunchyroll (16).
- Crunchyroll
- Why Raeliana Ended Up at the Duke's Mansion (2023) · composer
- Alderamin on the Sky (2016) · composer
- Is It Wrong to Try to Pick Up Girls in a Dungeon? (2015) · composer
- This Monster Wants to Eat Me (2025) · composer
- Gekijouban Toaru majutsu no indekkusu: Endyumion no kiseki (2013) · composer
- The Misfit of Demon King Academy (2020) · composer
- The Royal Tutor Movie (2019) · composer
- Oushitsu Kyoushi Heine (2017) · composer
- I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) · composer
- Build Divide: Code Black (2021) · composer
- The Beginning After the End (2025) · composer
- Anyway, I'm Falling in Love with You (2025) · composer
- +4 more
Subscription and free streaming for Keiji Inai'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
32 credits, 28 with a MovieCove page; 1 appearance as themselves is hidden until asked for.

Dead Account (not in the MovieCove catalog yet)(2026)
Midcredits score: 67th percentile of all shows
Midcredits score: 17th percentile of all shows
Midcredits score: 14th percentile of all shows
Tatsuki Fujimoto 17-26(2025)
Midcredits score: 93rd percentile of all shows
Midcredits score: 12th percentile of all shows
Midcredits score: 76th percentile of all shows
Build Divide: Code Black(2021)
Midcredits score: 18th percentile of all shows
Star Wars: Visions(2021)
Midcredits score: 48th percentile of all shows
Midcredits score: 31st percentile of all shows
Tototsu ni Egypt Kami(2020)
Midcredits score: 10th percentile of all shows (provisional, few ratings)
BURN THE WITCH (not in the MovieCove catalog yet)(2020)
Midcredits score: 63rd percentile of all shows
Midcredits score: 6th percentile of all shows
The Royal Tutor Movie(2019)
Midcredits score: 57th percentile of all films
Midcredits score: 82nd percentile of all films
Midcredits score: 80th percentile of all films
Magical Girl Site(2018)
Midcredits score: 28th percentile of all shows
Midcredits score: 3rd percentile of all shows
Midcredits score: 49th percentile of all shows
Oushitsu Kyoushi Heine(2017)
Midcredits score: 53rd percentile of all shows
Alderamin on the Sky(2016)
Midcredits score: 69th percentile of all shows
Midcredits score: 69th percentile of all shows
Midcredits score: 73rd percentile of all films
Outbreak Company(2013)
Midcredits score: 30th percentile of all shows
Midcredits score: 66th percentile of all films
Midcredits score: 86th percentile of all films
Btooom! (not in the MovieCove catalog yet)(2012)
Midcredits score: 54th percentile of all films
The Knight in the Area (not in the MovieCove catalog yet)(2012)
Midcredits score: 62nd percentile of all films
Midcredits score: 68th percentile of all shows
Career shape
A full career of 27 titles from 2010 to 2026.

Biggest box office
Eiga Kureyon Shinchan: Arashi o yobu! Ora to uchuu to purinsesu (2012)

Highest rated
Tatsuki Fujimoto 17-26 (2025)

Most popular right now
The Beginning After the End (2025)
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 Keiji Inai's films land?
Their typical MovieCove film has a Midcredits score in the 70th percentile, the median of all 8; across their 7 films with reception data, the typical film sits in the 72nd percentile for acclaim.
- 75th and up5
- 50th to 74th11
- 25th to 49th5
- Below 25th7
Shape of the crowd
15 of their 28 titles are Crowd Pleasers.
- Universally Loved1
- Universally Panned1
- Divisive1
- Crowd Pleaser15
- Broadly Agreed2
- Mixed8
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.
Is Keiji Inai's work okay for kids?
Across a limited sample of up to 4 MovieCove titles with content scores.
Severity 0–100 from the Content Guide. Categories with under 10 votes on a title are not counted.
Who does Keiji Inai work with?
People who share at least 2 of Keiji Inai's MovieCove titles, grouped by what they did on them; Yasunori Iwasaki shares the most, 3.
Directors
- Junichi YamamotoShared titles: Why Raeliana Ended Up at the Duke's Mansion (2023), Armor Shop for Ladies and Gentlemen (2018)See all 2 shared titles with Junichi Yamamoto

- Kōnosuke UdaShared titles: One Piece: Episode of Skypiea (2018), One Piece: Adventure of Nebulandia (2015)See all 2 shared titles with Kōnosuke Uda

Writers
- Mitsutaka HirotaShared titles: This Monster Wants to Eat Me (2025), Why Raeliana Ended Up at the Duke's Mansion (2023)See all 2 shared titles with Mitsutaka Hirota
- Eiichirô OdaShared titles: One Piece: Episode of Skypiea (2018), One Piece: Adventure of Nebulandia (2015)See all 2 shared titles with Eiichirô Oda
Actors
- Natsumi FujiwaraShared titles: The Beginning After the End (2025), Do You Love Your Mom and Her Two-Hit Multi-Target Attacks? (2019)See all 2 shared titles with Natsumi Fujiwara

- Azumi WakiShared titles: A Nobody's Way Up to an Exploration Hero (2024), Armor Shop for Ladies and Gentlemen (2018)See all 2 shared titles with Azumi Waki

- Tomokazu SugitaShared titles: Why Raeliana Ended Up at the Duke's Mansion (2023), Nura: Rise of the Yokai Clan (2010)See all 2 shared titles with Tomokazu Sugita

- Ai KayanoShared titles: Do You Love Your Mom and Her Two-Hit Multi-Target Attacks? (2019), Is It Wrong to Try to Pick Up Girls in a Dungeon - Arrow of the Orion (2019)See all 2 shared titles with Ai Kayano

Composers and cinematographers
- Yasunori IwasakiShared titles: One Piece: Episode of Skypiea (2018), One Piece: Adventure of Nebulandia (2015), Gekijouban Toaru majutsu no indekkusu: Endyumion no kiseki (2013)See all 3 shared titles with Yasunori Iwasaki

- Shingo FukuyoShared titles: Is It Wrong to Try to Pick Up Girls in a Dungeon - Arrow of the Orion (2019), Gekijouban Toaru majutsu no indekkusu: Endyumion no kiseki (2013)See all 2 shared titles with Shingo Fukuyo
- Shirô HamaguchiShared titles: One Piece: Episode of Skypiea (2018), One Piece: Adventure of Nebulandia (2015)See all 2 shared titles with Shirô Hamaguchi
- Hayato MatsuoShared titles: Gekijouban Toaru majutsu no indekkusu: Endyumion no kiseki (2013), Eiga Kureyon Shinchan: Arashi o yobu! Ora to uchuu to purinsesu (2012)See all 2 shared titles with Hayato Matsuo
Producers
- Tomoyuki MiyataShared titles: Is It Wrong to Try to Pick Up Girls in a Dungeon - Arrow of the Orion (2019), Gekijouban Toaru majutsu no indekkusu: Endyumion no kiseki (2013)See all 2 shared titles with Tomoyuki Miyata
- Hiroyuki SakuradaShared titles: One Piece: Episode of Skypiea (2018), One Piece: Adventure of Nebulandia (2015)See all 2 shared titles with Hiroyuki Sakurada
- Yûta KanoShared titles: One Piece: Episode of Skypiea (2018), One Piece: Adventure of Nebulandia (2015)See all 2 shared titles with Yûta Kano