Gust is continuing Surge Concerto: Ciel no Surge with a new volume slated for release on June 28. A scan from Dengeki PlayStation show two characters – Parry and Korin. More details about Ciel no Surge Volume 2 should be coming later.
Ciel no Surge had players bond with Ionasol and restore her memories. The PlayStation Vita game, which came out in April, is part of a larger Surge Concerto project that Gust is developing.