It appears that Kei is a high school student who has recently discovered his ability to live forever. Unfortunately, this newfound immortality does not grant him any superhero abilities and instead makes him an object of fascination and fear from both the general public and governments alike. As such, he must face the difficult decision of whether or not to use his powers for good or evil, while also grappling with the ethical implications of his own existence.
The show's lead character is a 17-year-old male ajin who faces opposition from his younger sister, eriko, due to her perception of him as being worthless....
Kei's childhood friend helps him escape from pursuers after discovering that he is an Ajin. Although they haven't spoken in years, the friend immediately decides to assist Kei when he learns that he h...
This individual is known as an Ajin, which stands for "demi-human." Despite their outward appearance of being content and composed, they have no qualms about ending the lives of other people....
Eriko is Nagai Keis younger sister. Shes ill with an incurable disease and thus she spends most of her time in the hospital....
Shinya Nakamura, who passed away in a motorcycle accident, later discovered that he was an Ajin. He was the first Ajin to be identified in Japan and is known as the perpetrator of the "Flood Incident,...
Ikuya Ogura is a lead figure in American Ajin research and comes to Japan to inspect Kei Nagai after he has been captured....
Nakajima was once part of Nagai Keis group of friends but appears to be the only one who genuinely cares about him. Due to this, he joins a fake Pro-Ajin Association website created by the Ministry of...
Tanaka Kouji is the second Ajin to be caught in Japan but later on got out due to Satous help....
High-ranking member of the ministry of health, labor, and welfare. He is intent on stopping Satous plan for a new Ajin nation....