A third year cadet with a timid and kind personality. Unlike his older brother, Shuhei, Ryota does not excel in a single subject, but is only slightly above average in most of his skills. One trait that is above others is his leadership skills, which is put to the test throughout the story. Though it is hard for him, he does not let his heart get in the way of his decisions.   He is a childhood friend of Nao and later grows a crush on Sayaka.   In the end of his third year, Ryota becomes the hero who saved Earth, and also gets elected as the student representative. 

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)

**Hobbies:** driving, dyeing hair, game, music ,watching movies
**Non-anime roles:**
- Carl Chryniszzswics in "Johnny Bravo" (animated TV series)
- Hellbat Silt in "Rockman Zero 3" (VG)
- Itsuki Midoriba in all "Shuffle!" (Visual Novel)
- Takeru Yagi in "IZUMO2 学園狂想曲" (Visual Novel)
- Tatsunami Ittosai in "Yo-Jin-Bo" (VG)

__Hobbies:__ Reading  
__Skills & Abilities:__ Cookie making

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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)