Human Specimens
December 19, 2025
1 Season • 5 Episodes
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Professor Shirô Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens."
Kanae Minato
Professor Shirô Sakaki
Itaru Sakaki
Rumi Ichinose
Anna Ichinose
Toru Shirase
Hikaru Akabane
Sho Ishioka
Ao Fukazawa
Dai Kuroiwa
December 19, 2025 • 56m
The bodies of young boys were found in six cases. Shiro Sakakil, 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.
December 19, 2025 • 46m
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.
December 19, 2025 • 47m
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.
