The first ran for 51 episodes with several changes made to the manga and it was followed by a film sequel in 2005.

He has ruled out reprising his role in a potential film sequel to the television series.

After the book was published in 1995, production began on a film sequel.

The story of the film was also continued in auxiliary media, at times even unattached to the film sequels themselves.

Three film sequels, a television series and numerous books and comic books have also been subsequently produced.