Soul Link
From the makers of Shuffle!

It was a H-game before it was made into an anime.

Genre is Bishoujo, Romance, Action, and maybe some Drama.

The anime is about (copy-paste from Wiki)
Aizawa Ryota was in the 3rd grade of the preparatory course of Central Military Academy. In AD 2045, he went to a space station, Aries, for the training with his classmates including Nagase Sayaka and Nitta Kazuhiko. However, the station was attacked by a terrorist group, Harallax. Now they must find a way back to earth. Along the way, betrayal and defections started... Story of Fantasy, Betrayal, Romance and Sci-fi.

This is a pretty good anime, but I think it was too short.
It has 12 episodes, but it should be 13, because there is a 10.5 where they explained the plot.
I would rate this a 7 or 8 out of 10.