A passenger on the Aries Station who is quiet and mysterious.    ~!She was revealed to be a mercenary and seems to have had a relation with Shin when she was younger.!~ (Source: Wikipedia)

Aizawa Ryota was in the 3rd grade of the preparatory course of Central Military Academy. AD 2045, he went to a space station, Aries, for the training with his classmates including Nagase Saka and Nittak Kazuhiko. However, the station was attacked by a terrorist group, Hallarax.Now they must find a way back to earth.
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(Source: Anime News Network)

Yuu Yamanami