In "Monster Musume: Everyday Life with Monster Girls," monsters are not merely products of imagination but real beings in search of human companionship. Three years ago, the world discovered that mythical creatures such as harpies, centaurs, and catgirls are genuine, possessing scales, feathers, horns, and fangs. The "Cultural Exchange Between Species Act" has allowed these formerly legendary beings to integrate into human society, though this process remains in its early stages.
Kurusu Kimihito, an ordinary human, finds himself involuntarily enrolled in the government's exchange program, which completely upends his life. He becomes responsible for caring for Miia, a lamia resembling a snake-like monster girl, as she adapts to human life. However, Miia is highly charming, and the law prohibiting interspecies reproduction is strictly enforced. Complicating Kimihito's situation further is the arrival of a striking centaur and a teasing harpy, leaving him to navigate his growing affections under difficult circumstances.