The teaser trailer for "Akira" was released in 1987. The film's main production was completed in 1987, with sound recording and mixing performed in early 1988. It was released in 1988, two years before the manga officially ended in 1990. Otomo is claimed to have filled 2,000 pages of notebooks, containing various ideas and character designs for the film, but the final storyboard consisted of a trimmed-down 738 pages. He had great difficulty completing the manga; Otomo has stated that the inspiration for its conclusion arose from a conversation that he had with Alejandro Jodorowsky in 1990. He later recalled that the film project had to begin with the writing of an ending that would bring suitable closure to major characters, storylines, and themes without being extraordinarily lengthy, so that he could know in reverse order which manga elements would make the cut into the anime and thus suitably resolve the manga's various elements into a lean, two-hour story.