Chainsaw Man - is a Japanese manga series written and illustrated by Tatsuki Fujimoto. The events take place in 1997, in an alternate timeline where the Soviet Union still exists, and many events such as the Holocaust, AIDS and nuclear weapons have been erased from history due to the consumption of their respective Devils by the Chainsaw Devil, with only four powerful Devils known as the Horsemen (Control, War, Famine, and Death) remembering the events.