Anime Crossover: Who Says You Can't Fall in Love in the Apocalypse?

[Multiple female leads + crossover anime + apocalypse + raising/raising a child + otherworld]

Good news, we've traveled through time!

Bad news, it's the end of the world.

Good news, I have my own system.

The bad news is, it's a dating system.

"You want me to fall in love in a world where a packet of instant noodles can do anything? Is it that your communication skills are flawed, or is it that my comprehension skills are flawed?"

This is the story of an ordinary person who transmigrates to a post-apocalyptic Japan, only to acquire a uniquely styled romance system, and incidentally, slay some Japanese devils.

(This story is rather hardcore; those who dislike this genre or have a strong aversion to such content should not read it. The author expresses gratitude in this regard.)