Tomomi Kobayashi and Kenji Ito returned respectively as character designer and composer. Kobayashi's favorite characters to design were Leonid and Mikhail, and the style she went for was one of elegance, trying to achieve a "classic, cool" look for her characters. Ito worked as both composer and arranger for the title. Rather than approach the game with a specific theme in mind, Ito allowed his music to evolve; while the opening theme evoked dread, he also wanted the score to represent hope. As Kobayashi's themes were complete by the time Ito began work, he used them as inspiration for each character's theme.