In a world gripped by a deadly male-only virus, the fate of humanity rests on the fertile womb of Ichijou Hikari. As the last surviving male, he's subjected to the relentless sexual demands of the world's most powerful and horny women. The series follows Hikari's grueling ordeal at a top-secret facility where he's forced into a non-stop insemination marathon. From the busty and dominant Commander Ayase to the eager scientists and military personnel, every woman wants a piece of his potent seed. Each episode escalates the depravity, featuring intense group sessions, rough fucking, and a constant stream of cum being pumped into an endless line of desperate, ovulating women. Hikari is pushed to his physical and sexual limits, his cock tirelessly servicing every hole presented to him as the government's ultimate breeding stud, all in the name of repopulating the Earth.