In the Apocalypse, My Wife Is Actually Myself?

What if, what if the world you live in were destroyed, and by chance you discovered another world? Compared to the ruins left behind, everything in that world is so harmonious and beautiful. More importantly, another you lives there. Though you have different genders, you share the same past and some precious memories...

But after falling in love with another version of yourself, could you really bring yourself to kill her?

Original title: Assassination Plan: Clear Sky