Unnatural
A TBS Original
Unnatural follows Mikoto Misumi, a seasoned forensic investigator who leads a small team as they piece together the truth behind perplexing deaths. Each episode pulls viewers into the meticulous world of autopsies, trace evidence, and digital forensics, where a single clue can overturn... Read more
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Streaming availability last verified: January 14, 2026
About Unnatural
Unnatural follows Mikoto Misumi, a seasoned forensic investigator who leads a small team as they piece together the truth behind perplexing deaths. Each episode pulls viewers into the meticulous world of autopsies, trace evidence, and digital forensics, where a single clue can overturn assumptions about how a person died. The team races against time to reconstruct events from scattered data, interviews, and lab results, all while navigating the pressures of a system that expects clear answers. While the cases test their professional judgment, the characters also carry personal stakes and the toll this line of work takes on their lives. The result is a precise, human drama about seeking accountability. While the pace is brisk, the show never sacrifices character depth, letting viewers see the people behind the cases.
Directed by Kentarō Takemura and Yoshiaki Murao, Unnatural comes from creators Ayuko Tsukahara and Akiko Nogi. Debuting in 2018, the series brings a lean, procedure driven approach to Japanese crime drama, grounded in forensic science and teamwork. The storytelling is tight and clinical, mirroring the rhythm of lab work.
With Satomi Ishihara as Mikoto Misumi and a strong supporting cast, the show earns credibility through performances that feel grounded rather than flashy. Its clinical focus and human stories appeal to fans who like forensics told with calm intensity. Ishihara's performance anchors the series, while Kubota and Ichikawa bring complexity to their supporting roles.
Viewers give Unnatural solid marks, with an 8.417 out of 10 rating from 90 votes, signaling broad appeal. The series centers on the tension between scientific certainty and the questions that data cannot answer, while exploring the emotional strain on investigators and families left behind.
Awards The data supplied does not list major nominations or wins for Unnatural. While the cast and direction are widely praised by audiences, there are no documented awards to report here.
Details
- Release Date
- January 12, 2018
- Episode Length
- 45m
- User Ratings
- 90 votes
- Type
- TV Series
- Seasons
- 1
- Episodes
- 10
- Network
- TBS
- Status
- Ended
- Genres
- Drama, Crime, Mystery
- Country
- Japan
- Studio
- TBS Sparkle +2 more
- External Links
- View on IMDB
Cast
Satomi Ishihara
Misumi Mikoto
Arata Iura
Nakada Kei
Masataka Kubota
Kube Rokuro
Mikako Ichikawa
Shoji Yuko
Yutaka Matsushige
Kamikura Yasuo
Yukiya Kitamura
Shishido Riichi
Hiroko Yakushimaru
Misumi Natsuyo
Koji Ohkura
Mori Tadaharu
Mami Hashimoto
Kojiya Yukiko
Ryo Ryusei
Kibayashi Nagumo
Director: Kentarō Takemura, Yoshiaki Murao
Created by: Ayuko Tsukahara, Akiko Nogi
Seasons (1 season, 10 episodes)
Season 1
10 episodes - 2018