Tales of Zestiria is an action role-playing game. It is the fifteenth main entry in the Tales series, developed by Bandai Namco Studios and published by Bandai Namco Entertainment. It was released in January 2015 in Japan on the PlayStation 3. For Western release in October of the same year, it was also ported to PlayStation 4 and Windows via Steam. The PS4 version was released in Japan in July 2016. As with previous entries in the Tales series, the game uses a variation of the action-based Linear Motion Battle System, with additional elements including a navigable open world, and the ability for certain characters to fuse into a single entity in battle to deliver powerful attacks.

Masaru Shiina , known professionally as Go Shiina, is a Japanese music composer primarily known for his work in video games. He joined Namco in 1997 and was best known during his time with the company for writing music for a number of games in the Tales, Mr. Driller, and God Eater franchises, He gained widespread recognition with his score for Tales of Legendia in 2005. Since then, he has also contributed music for several titles in the Tekken, Ace Combat, and The Idolmaster franchises. In addition to video games, Shiina has also composed soundtracks for various anime series and films, starting with the 2011 film Sakura no Ondo and Demon Slayer: Kimetsu no Yaiba, as well as composing and arranging songs for bands and other artists.