A beautiful woman who seems cold but says filthy things x a clear-headed girl reborn and determined to stay away from men and cuddle up with beautiful women.
Basically: rebirth + the two of them living a terrifying little life in the apocalypse + one-on-one romance + both leads sexually inexperienced + nothing but sweetness, no angst + a sure bet (so they say).
Content warnings: A rather clichéd rebirth plot + brainless wish fulfillment + amateurish writing.
Premise: Peaceful development, win-win cooperation