Ryuusaku

竜作

Kei's brother and a terrorist within the resistance movement.
In the anime, Ryuu assists with a terrorist attack on a shopping mall. He is then put in charge of the team tasked with infiltrating the military hospital to find any available information on the new subject, Tetsuo Shima.

Spoiler

In the manga, as the story progresses, Ryuu abandons his terrorist roots and becomes more heroic, working with George Yamada and guiding Shotaro Kaneda to Akira's chamber where Tetsuo Shima is held, though he battles with alcoholism.

Spoiler