welp there's the mom after all. I guess they're all in on the slaver cult. still boggles me why Elisa even joined up with them if they are just 60 people and live like medieval times. How did they even get the manpower to infiltrate the UW and kidnap number 4 at all where all they have are just arrows and swords? ESPECIALLY when Elisa mentions they have more people from her group ALL AROUND the world (Taiwan, Hong Kong and Even somewhere in Europe). so what the hell is the purpose of her joining the cult??? is Izanami what they call themselves or is it a fake and a scapegoat for Elisa?
Also with the guy worried about his wife and Child. If circumstances are different, he could be similar to number 2 and might abstain from the mating.