Producer Tomoyuki Tanaka had been hospitalized during the bulk of the development for Godzilla vs. Hedorah (1971). Upon recovery and seeing the movie, the producer was infamously distraught by the final product, although the extent of his displeasure has been debated due to mixed reports.
Despite being unhappy with the 1971 Godzilla film, the producer held no animosity against the director, Yoshimitsu Banno. In fact, the producer was impressed by Banno's work on Prophecies of Nostradamus (1974), whose on screen credit as a writer and assistant director undersells his contributions to the movie. As a result, following the completion of Godzilla vs. Mechagodzilla (1974), the producer tapped Banno to direct the 15th film in the Godzilla franchise. This included an announcement from Toho, noting that the 1975 Godzilla movie was to be headed by Banno.
Given the assignment, Banno first envisioned Godzilla having to fight a mutated starfish for the film. However, he pivoted toward doing a sequel to his 1971 movie instead, pitting the King of the Monsters in a rematch with Hedorah in Africa. Although the continent feels like a stark contrast to the heavily developed, overly polluted Japan seen in the 1971 film, it was at that time still making headlines for deforestation and droughts. In justifying the choice, Banno noted in an interview that "if those chaotic, dynamic countries developed a little further it wouldn't be implausible for Hedorah to show up there."
However, Tanaka was ultimately displeased with the idea. As a result, the producer pulled Banno and started to push the next Godzilla film in a totally different direction. This included a story contest to decide the concept and with Ishiro Honda at the helm. |