Ryunosuke Akutagawa is a fictional character whose name is reminiscent of the real-life Japanese author. However, this character does not actually exist within the 'Shingeki no Kyojin' series, also known as 'Attack on Titan'. The series, created by Hajime Isayama, primarily revolves around the struggle between humans and Titans. If Ryunosuke Akutagawa were to be a character in this universe, one might imagine him as a strategic thinker or writer, playing a role akin to providing insight or documenting the tumultuous events within this dystopian world.