Nojima was charged with writing the scenario and unifying the team's ideas into a cohesive narrative, as Kitase was impressed with his earlier work on the mystery-like "Heracles no Eikō III: Kamigami no Chinmoku", an entry in the "Glory of Heracles" series. To make the characters more realistic, Nojima wrote scenes in which they would occasionally argue and raise objections. Though this inevitably slowed down the pace of the story, it added depth to the characters. The graphical improvements allowed even relatively bland lines of dialogue to be enhanced with reactions and poses from the 3D character models. Voice acting would have led to significant load times, so it was omitted. Masato Kato wrote several late-game scenes, including the Lifestream sequence and Cloud and Tifa's conversation before the final battle. Initially unaffiliated with the project, Kato was called on to help flesh out some story scenes. Like each of the individual scenario writers, Kato, after thoroughly discussing the story with the entire project team, wrote his own scenes according to his tastes that were later approved after verifying that they were up to standards.