Teiichi Akaba is a student at a prestigious private male high school known for producing important politicians and bureaucrats. His dream is to become the prime minster and make his own country. To help achieve his dream, he wants to become elected as his school's student council president. The elected student president receives privileges and a better chance for promotions later in the political & bureaucrat world. A power struggle takes place surrounding the student election.

Kei Nagai dies in a car accident, but realises he is a type of immortal known as Ajin. Hunted by humans, Ajin is eventually found by the government and used as a subject in cruel experiments. He finds fellow demi-humans along the way as he escapes and goes on the run.