>>/6795/
> That little girl 
It's a robot the professor made as his only friend / waifu in a post-apocalyptic world where all other humans are dead.
https://mangadex.org/title/28b75755-00ba-4f2a-940f-dd13cff066e9/lonely-professor-and-robot-girl-s-despair-like-utopia

I find it difficult to read it's 2realistic4me