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.