Several announcements were made during today's press conference for the game from Square Enix, Gunslinger Stratos. They included a TV anime adaptation titled Gunslinger Stratos the Animation set to air Spring 2015.

Synopsis:
In the 22nd century, an island that used to be called Japan is now called "Seventeenth Far East Imperial City Management District." People who live a simple life believe that everyday will be same; however, a disease called "deglation" attacks people. "Deglation" is a disease where people crumble like sand for no reason. The disease slowly destroys the world.

A normal student named Tooru Kazasumi somehow gets involved in an argument in another world called "Frontier S (Stratos)." That also means fighting with another self.

It's a war between two worlds.
(Source: rough translation from the official site)

Staff
Original: Gen Urobuchi
Director: Shinpei Ezaki
Script Produce: Nitroplus
Series Composition: Norimitsu Kaihou
Character Desgin: Shinichi Yokota
Music: Tetsuya Kobayashi
Studio: A-1 Pictures

Cast
Tooru Kazasumi: Atsushi Abe
Kyouka Katakiri: Hisako Kanemoto
Kyouma Katakiri: Masakazu Nishida
Remy Odhner: Miyuki Sawashiro
Shizune Rindou: Kana Ueda
Ryuu Kusakage: Soichiro Hoshi
Akira Rakandou: Rikiya Koyama
Olga Janetine: Sayaka Ohara
Aaron Burroughs: Takehito Koyasu
Jonathan Sizemore: Yumiko Kobayashi
ξ988: Saki Fujita
Mondo Makabe: Yousuke Akimoto
Lyudmila N. Ignatova: Saori Hayami
Matsurika Shinou: Mariya Ise
Srinivasa Sen: Tooru Ookawa
Kumi Minakata: Nana Mizuki

Trailer: https://www.facebook.com/video.php?v=755055924588236

Anime official site: http://www.guns-project.jp/
Game official site: http://gunslinger-stratos.jp/gs2/

Source: Dengeki

Gunslinger Stratos: The Animation on MAL