Galga: Modern Warfere

In the year March 1st 2277 the human race was attacked by the first alien spaceship invaded earth. However humans weren't so weak, and fought back against the superior alien race. In the year 2280 humanity found the best way to fight back and match the strength of aliens. And now, in the year 2300 the leaders of humanity decided to send an elite fighter to space  to fight against the aliens and stop their endless invasions.