NC16Prime Video6.0(3)

Human Specimens

Name: Human Specimens
Genre: Drama, Mystery, Crime
Released: 2025-12-19
Rating: 6.0

人間標本

DramaMysteryCrime

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We checked 8 streaming services in India on 04 Jun 2026 at 12:42 IST

2025

1 Season

5 Episodes

Ended

NC16

About

Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens."

#based on novel or book#butterfly#psychological#thriller

Cast

Hidetoshi Nishijima

as Professor Shiro Sakaki

Somegoro Ichikawa

as Itaru Sakaki

Rie Miyazawa

as Rumi Ichinose

Aoi Ito

as Anna Ichinose

Towa Araki

as Toru Shirase

Jyutaro Yamanaka

as Hikaru Akabane

Kodai Kurosaki

as Sho Ishioka

Leo Matsumoto

as Ao Fukazawa

Ikuho Akiya

as Dai Kuroiwa

Seasons

Miniseries

5 episodes2025

Episodes

Miniseries

Episode 1

Dec 19, 202556m6.0

The bodies of young boys were found in six cases. Shiro Sakaki, a professor considered Japan's leading expert on butterflies, turns himself in. He has recorded everything in a report published on the Internet, from his motive to the process of his creation. The interrogation proceeds as if tracing his distorted record, leading to a sensational suspense story where beauty and madness intertwine.

Episode 2

Dec 19, 202546m6.0

Shiro starts to express his artistic viewpoint during interrogation. The art camp is canceled when Rumi falls ill. Shiro goes to the mountain to take the boys home. In the warehouse, there are six cases on display. Shiro feels emotional upheaval due to his expectations toward Itaru. As the detective investigates further, a big mystery arises, and the interrogation gets to the crux of his story.

Episode 3

Dec 19, 202547m6.0

After creating five specimens, Shiro's final target is his beloved son, Itaru. Despite the memories with Itaru, Shiro only sees his son as a butterfly. Shiro makes up his mind to create his last specimen. At last, the report named "Human Specimen by Shiro Sakaki" seems to have ended. However, the letters in the report start to get distorted, and the story shifts to a new perspective.

Episode 4

Dec 19, 202546m6.0

Itaru stays home while Shiro leaves for an observation survey of butterflies. Itaru stares at his father's specimens and invites his friends over. He starts recording his observations in his own report. When Shiro returns, they have dinner and share memories. Shiro opens his son's computer with a strange feeling about the specimens in his room.Three years later, Shiro receives a letter from Anna.

Episode 5

Dec 19, 20251h 3m7.0

Anna seemed proud, but she longed for a successor while looking at her mother, in the spotlight for her art book. After the art camp is canceled, Anna invites the boys to the mountain house. She insists she made the Human Specimen. Shiro understands Itaru's hopes to become his father's specimen. The truth of Itaru's death and the mystery of Anna's confession will be unraveled.

Where does Human Specimens rank today?

Human Specimens is #3242 on the CineFlixo Daily Streaming Charts today.

Highest: #3242
Top 10: 0 days
Top 100: 0 days

Watch Human Specimens Online Free — All Episodes in HD

Looking for a place to watch Human Specimens online for free? You've landed on the right page. Human Specimens is a popular Japonés drama, mystery, and crime series from 2025 that you can stream right now on CineFlixo in high quality, no signup required.

About Human Specimens

Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens." Across 1 season and 5 episodes, originally airing on Prime Video.

Human Specimens Cast and Characters

The cast features Hidetoshi Nishijima (as Professor Shiro Sakaki), Somegoro Ichikawa (as Itaru Sakaki), Rie Miyazawa (as Rumi Ichinose), Aoi Ito (as Anna Ichinose), and Towa Araki (as Toru Shirase). Their performances are a major reason Human Specimens has built such a passionate audience.

Where to Watch Human Specimens Online

CineFlixo lets you stream Human Specimens online free, instantly, in HD. There's nothing to install — open the page, hit play, done. Works perfectly on Jio, Airtel, Vi networks across India and on slow mobile data thanks to our adaptive video pipeline.

▶ Watch Human Specimens Now

Why People Are Watching Human Specimens

Human Specimens flies under the radar but it deserves your attention. What makes it work is emotional weight that hits where it counts and tight pacing that earns its twists. If you enjoy Japonés storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.

Frequently Asked Questions about Human Specimens

Where can I watch Human Specimens online for free?

You can watch Human Specimens online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.

How many episodes does Human Specimens have?

Human Specimens has 5 episodes across 1 season. All episodes are available to stream right here on CineFlixo.

Is Human Specimens good? What's the rating?

Human Specimens holds a 6.0/10 rating based on 3 reviews — a solid pick if the genre interests you.

Who is in the cast of Human Specimens?

The main cast includes Hidetoshi Nishijima, Somegoro Ichikawa, Rie Miyazawa, and Aoi Ito, plus a strong supporting ensemble.

Is Human Specimens available in Japonés?

Yes — Human Specimens was originally produced in Japonés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.

When was Human Specimens released?

Human Specimens first aired in 2025.

Do I need an account to watch Human Specimens on CineFlixo?

No. CineFlixo is free and you can watch Human Specimens without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.

Similar Series You Might Like

If you enjoyed Human Specimens, check out Trespasses, Ouija, un été meurtrier, Mate, Hero Legends, and Dao Lhong Fah.

Frequently Asked Questions

Where can I watch Human Specimens for free?

You can watch Human Specimens online for free on CineFlixo. All 5 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.

How many seasons and episodes does Human Specimens have?

Human Specimens currently has 1 season and a total of 5 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.

What is Human Specimens about?

Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens." It belongs to the Drama, Mystery, Crime genres.

In which language is Human Specimens originally available?

Human Specimens was originally produced in JA. On CineFlixo the show is available in its original JA audio. Check the player options on the watch page for available subtitle tracks.

When was Human Specimens first released?

Human Specimens first premiered on December 19, 2025 (2025). The series has since concluded its run.