Tokyo Shoumetsu Sensou

A citywide extermination event occurs every four years, targeting Tokyo and requiring its population to kill one another until ten million are dead. Dubbed "Save the Earth," the event selects an overpopulated city at random to serve as the battleground, with no option for refusal or escape. Participants are forced into a fight for survival, with no alternatives or mercy. Akira Suwa is thrust into this deadly scenario, where he must struggle to stay alive and safeguard those he cares about.