Gundam makers Sunrise's April sci-fi mecha anime Valvrave the Liberator works with the familiar premise that 70% of humanity has migrated into space, leaving a neutral, but prosperous colony ready to be invaded. However the character by D.Gray-man's Katsura Hoshino and adapted by Tatsuya Suzuki (animator of series like Gintama, and character designer on some hentai anime) certainly isn't typical Gundam-material.
Kou Matsuo (Natsuyuki Rendezvous, Rozen Maiden) will be directing, with Ichirou Ohkouchi (Code Geass) as the story composer. Mecha designers include the legendary Kunio Okawara as well as Makoto Ishiwata (Blassreiter) and Naohiro Washio (Bodacious Space Pirates).
Angela (Asura Cryin') sings the end theme.
L-elf - Ryohei Kimura (Yasutarō Mihara from Un-Go, Kakuta in C)
Shoko Sashinami - Asami Seto (Chihayafuru's Ayase Chihaya, Lagrange - The Flower of Rin-ne's Lan)
Saki Rukino - Haruka Tomatsu (Ichika Takatsuki in Ano Natsu de Matteru, Mashu in C)
Who would you like to see voice the rest of the cast?