Instructor on the Aries Station. Appears to be very caring towards her students.   ~!She is revealed to be the perpetrator and mastermind of the attack on the station. She ends up betraying the terrorists on the station and takes it over herself, with her Sukyura soldiers. She is considered to be the perfect Sukyura being and controls those who possess the Sukyura cells. She becomes intrigued with Shuhei since he is the only one that she cannot fully control. In the end, she is destroyed by Nanami.!~

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.
 
(Source: Anime News Network)

In AD 2045, a group of military cadets, attending the preparatory course of the Central Military Academy, proceeded for training aboard the space station Aries. Within this group of cadets were Ryota Aizawa and his classmates including Sayaka Nagase and Kazuhiko Nitta. The situation went sour when a terrorist group called "Jararacas" took over the station. While the military successfully evacuated the station, Ryota and his group were trapped aboard. Worse still, the boarding assault left most of the military forces dead, effectively leaving the cadets on their own. 
An unexpected twist occurs when a mysterious virus was released within the station, gaining control of almost all personnel and turning them into mindless creatures in the process. This forced everyone, friend and foe alike, to find a way out of the station alive. 
(Source: Wikipedia)

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