Towers filled with monsters. Ability users transcending modern weaponry.

In an attempt to maintain a society, humanity decides to eliminate the latter. Peace returns only for a year, before monsters overflow and abilities return. The fate of the world now lies with the superhumans who will redefine its hierarchy.

At the center of this new world, lies a high-schooler with a peculiar ability.
He could create clones of himself.
But his clones were a little special: They're returnees of other worlds, restoring him power, information and... unresolved relationships.

Wait. Repeat that? They're all women?
"...Help."