"Innocence" began production in 2006 at Alfa System as the next main entry in the "Tales" series. Developed parallel to the DS spin-off title "Tales of the Tempest", the goal was to include all the series' main gameplay and narrative elements despite the limited medium. The character designs were done by Mutsumi Inomata, while the music was composed by series newcomer Kazuhiro Nakamura. Extensive voice acting was included using CRI Middleware's Kyuseishu Sound Streamer compression algorithm. After release, it was decided to remake "Innocence" for the Vita, using platform-specific gameplay functions, redone voice work and music, and new characters. Japanese singer-songwriter Kokia created the opening theme songs for both versions of "Innocence". Both versions have been positively received in Japan, and Western opinions on the two versions of "Innocence" have been mostly positive.