In 1945, at the close of the Pacific War, an invasion beset the planet Earth. Droves of Phantom Beasts - aliens from another world - landed and waged war against man. Humanity was forced to unite and fight this common threat, but years later, in present times, the death toll has depleted the military forces, leaving Japan with no choice: They must enlist the help of teenagers. Atsushi Hayami is among those who, rather than lead a normal high-school life, must take up arms to ensure the survival of mankind. 
 
(Source: ADV)

An anthology of short stories with such creators as: Shizuru Hayashiya (Onegai Teacher), Kuroyuri Hime (Aquarian Age) and Yuna Takanagi (Fire Emblem Thracia 776). 
Credit - Anime News Network

Based of the playstation game Gunparade March. 
 
Note: Released in Enix Supercomic Gekijoh Volume 39, 43, 47, 54, 57 and 58.

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