​In a post-apocalyptic world, ancient Demon Beasts resurface after a catastrophic event. To ensure their survival, they must mate with human females and create a powerful hybrid creature. Sadly, 19-year-old Kayo falls victim to a possessed lover and becomes the mother of a horrifying mutant Demon Beast. Enter Interplanetary Mutual Observation Agent Muneto, who must rescue Kayo from this monstrous creature driven by insatiable lust. Will Muneto be able to save Kayo and prevent the imminent invasion? Discover the thrilling and seductive journey filled with unimaginable desires and terrifying creatures in this adult animated series.​