It can also serve as a foreshortening of other names, including Hirohide, Hirohiko, Hirohisa, and Hirohito.
The screenplay was written by Hirohiko Uesaka based on a storyboard by Kōnosuke Uda, Eisaku Inoue, Ken Ootsuka, Kenji Yokoyama, and Takahiro Imamura.
Hirohiko Yokomi (voiced by: Nobuyuki Hiyama) is the travel-writer, who turns out to be a huge train-fan.