Akiteru

Akiteru is a fictional character appearing in the Japanese light novel series Sword Art Online, written by Reki Kawahara. He is the younger brother of Akihiko Kayaba, the creator of the virtual reality MMORPG Sword Art Online. Akiteru's existence is initially unknown to the public and even to most of the characters within the series. He plays a crucial but often behind-the-scenes role in the narrative.

Akiteru is depicted as a gifted programmer and a skilled player within virtual worlds. He possesses a deep understanding of game mechanics and systems, which he utilizes to observe and sometimes subtly influence events. Unlike his brother, who sought to create a unique experience and a form of digital afterlife, Akiteru appears to be more concerned with the well-being of those trapped within the games and the consequences of his brother's actions.

His motivations are complex, stemming from a mix of familial duty, guilt, and a desire to rectify the harm caused by Akihiko Kayaba. Akiteru often acts as a source of information and assistance to the main protagonists, providing them with crucial insights or tools that help them overcome challenges. He typically operates from the shadows, preferring to remain anonymous and avoid direct confrontation. His involvement is a key element in understanding the broader scope of the Sword Art Online saga and the ethical dilemmas presented by advanced virtual reality technology.