Valkyries are Virgin Warriors of the Norse god， Odin and they protect the humans from demons of the outer skirts. Yet the demons have found their weakness after the goddess， Freya”s betrayal to be a sex slave. Thus one Valkyrie was made a sex slave after being threatened that her other kinsmen will also share the same fate if she does not submit. With the castle taken over， the demons challenged all men to impregnate her， if they wish to live...