Giten Maou Jusei

In a world where dark rituals and forbidden magic intertwine, a young woman finds herself at the center of a sinister ceremony known as the Demon King's Insemination. She is chosen as the vessel for a powerful demon lord's rebirth, forced to undergo a ritual that blurs the lines between pleasure and pain, as ancient forces seek to manifest through her body.

As the ritual progresses, she must confront the overwhelming sensations and the terrifying reality of becoming the host for a being of immense power. The boundaries of her own will and desire are tested, leading to a climax where her humanity hangs in the balance.