- Drama: Impossibility Defense (literal title)
- Romaji: Funohan
- Japanese: 不能犯
- Director: Eisuke Naito
- Writer: Arata Miyatsuki (manga), Junpei Yamaoka
- Network: dTV
- Episodes: 4
- Release Date: December 22, 2017
- Language: Japanese
- Country: Japan
Tadashi Usobuki (Tori Matsuzaka) is a contract killer. He carries out his killings by using methods which are impossible to prove.
- Based on manga series "Funohan" written by Arata Miyatsuki and illustrated by Yuya Kanzaki (first published October, 2013 in seinen manga magazine Grand Jump).
- Related titles:
- Impossibility Defense | Funohan (dTV / 2017)
- Impossibility Defense | Funohan (2018)