Dorohedoro

One day in the middle of the pacific ocean a miracle occurred, a new continent appeared out of nowhere! The new continent was the home for new and mysterious plants, creatures and minerals! Humanity is excited as the age of exploration has returned.

With Earth colonized by a superior alien civilization, Akira's only chance at a better future is to enlist as an expendable Yakitori foot soldier.

In an alternate history where the male population is nearly decimated, eligible men serve as concubines to the woman shogun inside the walls of the Ooku.