Japanese Original Human Specimens Coming to Prime Video

Amazon MGM Studios’ Japanese original series Human Specimens, based on Kanae Minato’s novel, is set to bow globally on Prime Video on December 18.

“We are excited to present to our Prime customers worldwide a new series that will leave a lasting impression,” said Thomas Dubois, head of French and Japanese originals at Prime Video. “This dark and compelling drama series earnestly confronts the eternal questions that Kanae Minato explores with her sharp pen—the purpose of life and the nature of love.”

“Bringing together the extraordinary talents of Hidetoshi Nishijima and Somegorô Ichikawa, masterfully directed by Ryuichi Hiroki, we have created a series that fully realizes the power of the original work while delivering an intense and unforgettable experience that transcends cultural boundaries,” Dubois continued.

Human Specimens follows Professor Shirô Sakaki, a butterfly researcher, who confesses to turning six young boys, including his own son Itaru, into “human specimens.”

Hidetoshi Nishijima (Drive My Car) stars as the professor, while rising star Somegorô Ichikawa plays his son. Ryûichi Hiroki (April Bride, The Waxing and Waning of the Moon, Motherhood) is directing the series.

“The original novel by Ms. Kanae Minato is layered with powerful themes—the infinite depths of parent-child love and conflict, the complexity of human nature, the fine line between art and madness and the desperate pursuit of beauty,” Nishijima said. “I was captivated by how the story kept surprising me with unexpected turns right up to the end. When I first heard about this project, I knew immediately that I wanted to be involved. Now, working with director Ryûichi Hiroki for the first time, alongside our incredible cast and crew, we’re pushing through the challenges of bringing this story to life. As we near completion, I can’t wait for audiences to experience this rich, intense human drama where the truth keeps shifting until the very end.”

“Sometimes, humans find a strange beauty in their endless desires and inner darkness,” noted Ichikawa. “Perhaps this is because these very desires are what make us human. Ms. Kanae Minato portrays this human essence through descriptions that are sometimes hard to face yet utterly gripping—impossible to stop once you start reading. It was incredibly exciting to be part of bringing this world to life, alongside director Hiroki and our team of visual artists who have given physical form to this vision. I also had the pleasure of sharing fresh, inspiring moments with Mr. Nishijima and the rest of the cast. I hope audiences everywhere will get to experience this work.”

Minato commented, “As a mystery writer and parent, I challenged myself to tackle filicide—perhaps the most difficult theme for me to imagine. At the same time, I explored one of my recurring themes since my debut: whether people truly see the same things. I combined this question together with the nature of butterflies and art. It was particularly challenging to express colors and specimen designs through words alone. That’s precisely why I strongly hoped for a visual adaptation, and my wish has been granted in the most wonderful way possible. I’m truly excited to see how audiences will respond to this series and what emotions it will evoke in them.”

“This series explores humanity’s obsession with beauty through the lens of a complex father-son relationship,” Hiroki added. “When I first read the original work, while overwhelmed by its profound themes, the sharp insights into human nature and the beautiful world Ms. Kanae Minato created through butterfly motifs proved deeply captivating. The series aims to carefully yet boldly portray a world where love and madness intersect, expressed through butterflies and art. The anticipation of how Prime customers will respond to this unique vision fills me with great excitement.”