General · EdgepediaOctober 3, 20267 min read

A.I.C.O. -Incarnation-

A.I.C.O. -Incarnation- is a 2018 Japanese original net animation (ONA) series, a bio-science-fiction action story produced by the studio Bones and distributed worldwide as a Netflix original. Its 12 episodes, each about 24 minutes long, follow a 15-year-old girl whose body hides a secret connected to a man-made biological disaster, and who joins a team of escorts to reach the center of the quarantined zone where the disaster began.¹^•²

Key fact	Detail
Format	Original net animation, 12 episodes of about 24 minutes, produced by Bones; released March 9, 2018 as a Netflix original with worldwide exclusive streaming¹^•³
Director	Kazuya Murata, director of Gargantia on the Verdurous Planet and general director of Suisei no Gargantia era projects; series composition by Yuuichi Nomura³^•⁴
Setting	Japan in 2037, two years after the "Burst," an accident during artificial-body research that let the runaway artificial life form "Matter" overrun the Kurobe Gorge²
Protagonist	Aiko Tachibana, 15, who lost her family in the Burst and learns from transfer student Yuya Kanzaki that a secret is hidden in her body; the key lies at the "Primary Point," the center of the Burst¹
Main cast	Haruka Shiraishi as Aiko, Yusuke Kobayashi as Yuya, Takehito Koyasu as Kyousuke Isazu, Toru Okawa as Susumu Kurose, Ai Kayano as Maho Shiraishi⁶
Music	Score by Taro Iwashiro; opening theme performed by TRUE, ending theme by Haruka Shiraishi⁴

Spoilers

Central twist: In episode 2, Aiko is told that her brain was transplanted into a body made of artificial biomatter⁵

Premise

The story is set in a near-future Japan where biotechnology has advanced rapidly. During research into "artificial bodies" (人工生体), a major accident called the Burst releases a runaway artificial life form called Matter, which erodes the whole Kurobe Gorge area. The research city, once hailed as humanity's hope, is placed off-limits by the government. Two years later, in 2037, Aiko Tachibana, who lost her family in the Burst, is told by the transfer student Yuya Kanzaki about a secret hidden in her own body. The key to resolving it lies at the Primary Point, the center of the Burst, and Aiko decides to enter the sealed area with Yuya as her guide and a guard unit of "Divers" protecting the team.²

The early episodes establish the deception at the core of the plot. Episode 1, "Contact" (接触), shows Aiko, having lost her family in the Burst and regained the ability to walk, having her peaceful daily life broken by the new transfer student. Episode 2, "Target" (標的), takes her to Susumu Kurose, a former colleague of her father, who tells her the unbelievable fact that her brain has been transplanted into a body made of artificial biomatter.⁵ The series' promotional catchphrase stated the premise bluntly: "You are now... not human" (君は今…人間じゃない).³

Origin and production

A long-gestating idea. Director Kazuya Murata said the concept dated back to the period when he worked on Planetes (2003), and that he conceived it at roughly the same time as Gargantia on the Verdurous Planet, keeping the two ideas paired: the appeal of a large stage with a fleet-like setting, and the opposite appeal of a story focused down to the individual level.⁷ The concrete offer came from Bones producer Naoki Amano during the broadcast of Gargantia, with Bandai Visual (later Bandai Namco Arts) and Bones planning an original television series; the brief given to Murata was a "team action" story.⁸^•⁹ From that brief the team built a skeleton of a near-future Japan where a team with a special mission infiltrates a region sealed off by a biological disaster, and Murata attached his older bio-SF idea of a girl whose body has been taken from her, traveling to reclaim it under the guidance of a mysterious boy.⁹

Hard science fiction grounding. Murata described the work as hard science fiction and said he enjoys simulating the future. He positioned the artificial bodies as an extension of regenerative medicine: imagining a technology that fully resolves the ethical problems of ES cells, he reasoned that what such technology produces would not be life as humans define it but an industrial product, which would make artificial organs and artificial bodies freely manufacturable.⁷ To keep the story internally consistent, the staff prepared a detailed fictional chronology connecting the present of 2018 to the story's 2037, including dates for when director-general Nanbara advanced the artificial-body technology with Dr. Kiryu and Susumu Kurose, and when Kurose was betrayed by Nanbara.⁷

Real-world locations. The setting is modeled on Toyama Prefecture. The street in Nyuzen town served as reference for the street Yuya runs down while escaping Aiko's pursuers in episode 1, and the beach in front of Aiko's house was based on the coast along the Kurobe River alluvial fan, where boats really are lined up side by side as in the show.¹⁰ Murata said he liked Kurobe from the start: a closed space, still difficult to enter on foot, called a secret border of Japan, and home to some of Japan's leading dams.³

Drawing the Matter. The greatest production difficulty Murata reported was not the bio subject matter itself but depicting the Matter, the runaway artificial life form: it is amorphous, dense with lines, and hard to grasp physically or intuitively because neither the animators nor he had ever seen anything like it.⁹

Staff and music

The credited staff list names Yuuichi Nomura for series composition, Hanaharu Naruko for original character design, Satoshi Ishino for character design and chief animation direction, Akira Okada for concept design, Takeshi Takakura for main mechanical design, Kazuhiro Miwa for Matter design, and Taro Iwashiro for the music, with sound production by UTAMARO Movement and music production by Lantis. The opening theme is performed by TRUE and the ending theme by Haruka Shiraishi, who also voices Aiko.⁴

Release and reception

Netflix began worldwide exclusive distribution on March 9, 2018.³ Murata noted a drawback of the all-at-once streaming model: weekly television broadcasts force on-time completion and give staff the encouragement of audience reaction, which simultaneous full-season release cannot provide.⁸ The series later received a terrestrial broadcast in Japan beginning July 12, 2020, accompanied by a Bones web column in which Murata answered questions about the setting and the show's Toyama locations were introduced across all 12 episodes.¹⁰

On AniList the series holds a mean score of 63 percent, with about 34,000 users marking it on their lists and 315 listing it as a favorite; a manga adaptation is listed as finished.¹ Critical responses have emphasized its craft and its conventional structure. The Anime Evo review scored it 92 percent overall, with animation at 98 percent and characters at 92 percent, calling it a solid, character-driven science-fiction romp in the tradition of late-1990s and early-2000s series such as Zegapain and RahXephon, while noting it does little original with its premise.¹¹ THEM Anime Reviews praised the way the story lets Kanzaki and the others tell Aiko their account in their own words while quietly conveying that they are not being completely honest with her.¹² Japanese user reviews on Filmarks average 3.2 out of 5 from 675 reviews, with recurring comments praising the visuals of the Matter and equipment while finding the story structure familiar.¹³

Place in Netflix's early original anime

A.I.C.O. -Incarnation- belongs to the first wave of Netflix-funded original anime, alongside works such as B: The Beginning (Bones) and Hero Mask (Studio Pierrot), a period when Netflix and Amazon became major funders of Japanese animation and Netflix in particular became home to more adult-oriented, Western-friendly properties.¹⁴^•¹¹ The series was not renewed; it stands as a single 12-episode season.⁶

References

Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Series and fictional screen worlds › Anime and manga › Anime series, episodes, and franchises › OVAs, ONAs, and streaming-original anime

Initially written Oct 3, 2026 · Reviewed: Oct 3, 2026; Oct 25, 2026 · Edited: Oct 3, 2026; Oct 25, 2026; Nov 1, 2026 · Last review: Oct 25, 2026

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