Hero is a film based on the 2001 TV series of the same name.
Casting of this film, with the original casts from the TV series, includes the new casts from the special drama, which aired in 2006. Additionally, father of Takako Matsu, Koshiro Matsumoto, is also cast, as well as a special guest from Korea, Lee Byung-Hun.
This was the first time Takuya Kimura appeared in a film with a Korean actor. Both Kimura and Lee Byung-Hun will once again, appear in the in a 2008 film, I Come with the Rain.
This film mainly portraits the events that occurs in the courtroom, which was rarely done in the TV series.
The region-2 DVD (Korean subtitles version also available) was released on March 8, 2008 by Pony Canyon.
The film continues from Hero SP, five years after Kuryu Kohei was transferred to Shinigaki Island. Kuryu Kohei back to Tokyo Branch DA, which everything seems doesn't changed at all. At last, the DA and the clerk becomes a couple.