Leira - Stargazer-

Far in the future some humans has left the earth to discover new worlds. To explore the stars and against unknown forces, they create 3 super weapon armor PFM00 which is worn by a girl under the code "Leiria." PFM00 armor have "accel mode" which able to slows opponent's bullet in limited time and turn it into energy. Leiria Stargazer formerly was a paid doujin game (Comiket 80, 2011) but now has become a freeware. The game is the final completion from Nonlinear's previous work The Chaste Full Metal Maiden - Leiria.