For those of us who are new to the series, can you explain how Final Fantasy X-2 relates to its predecessor, Final Fantasy X?

As the first title for the PlayStation2, our development team put a lot of time and resources into developing FFX. Although it had never been done before, the development team thought that a sequel would work, especially with the assets and tools that were developed for the original. More importantly, what really motivated the development team was the fans' "wish" to have a FFX sequel.