Ark is the next heir to the noble branch family, Nagara. Even so, he’s constantly mocked for being weak in battles, and the girl he loves, Aurelia, is to be married to the Crown Prince.

Unable to bear his weak self, he proposes to Aurelia that they run away together. But even as Ark attempts to change his fate, the cogs are already in motion for a demonic end of the world, and he may be the hero that can rise up...along with his harem of beautiful women!

In the year 2040, Japan has advanced technologically to the point of no longer needing people to work. However the cure for some diseases, such as multiple sclerosis, has not been discovered?people who have this disease have to stay cryogenized for 5 years to receive the cure. What was not expected when they woke up, was that they are the only hope for humanity to survive.

World's End Harem After World is the continuation of the story and not a sequel or different series to this, since it didn't end (as you can see with the volume release being 13 and not 1).