the production of "dawn of sorrow" was announced on january 6, 2005, as the first "castlevania" game to be released for the nintendo ds. longtime "castlevania" producer koji igarashi was in charge of the production. the choice to develop the game for the nintendo ds instead of the sony playstation portable was due to "aria of sorrow"s success on nintendo's game boy advance, and igarashi's observations of both consoles during the 2005 e3 media and business summit. he felt that it was a waste to use the storyline with soma cruz and the tactical soul system in only one game, contributing to his desire to make a sequel. the original design team from "aria of sorrow", as well as personnel from konami tokyo, were involved in the production of "dawn of sorrow". igarashi intended to include a white-collar japanese worker in the game. this worker would be a manager in a japanese firm and have a family. however, the development team's opposition to this idea forced him to drop it.