Until Impe7us completes his fantastic job scanlating the manga, we won't know whether Yoshitomi Akihito brings his terrific balance (through 2 volumes) of suspense, science fiction, slice-of-life, humor and fan service to a satisfying climax and conclusion.
I'd say there's a 50/50 chance he did it in the completed volumes. I worry a little that the phantoms are a weird combination of abduction mechanism, plastic doppelganger, and black hole. Seems like a weird combo of tech or life form. At least the central premise (where'd everyone go?) and the relationships of the 4 survivors are engaging.
Do you think he will?