モノリスソフト
Following the release of "Episode I", Takahashi and other Monolith Soft staff reassessed the series and the general structure of Monolith Soft. Takahashi, who had acted as the first game's director, stepped down to allow the "Xenosaga" series to grow. He gave the development of "Episode II" and future "Xenosaga" projects to a team of younger developers. The new team decided to shift the game's focus based on player feedback and expand the series into other media. Takahashi continued to act as a supervisor to ensure the series remained true to the original overall plan. The draft, created by Takahashi and Saga, was turned into a script by Norihiko Yonesaka, who needed to condense and even cut several events from the original draft to fit it into a single game. Saga later commented that these changes resulted in the planned scenario for "Episode III" also being changed. A portion of the intended narrative of "Episode II" was turned into the plot of "Pied Piper". "Pied Piper" was co-developed by Monolith Soft, Namco Mobile and Tom Create. Following the completion of "Episode II" and "Pied Piper", Saga left the series.