It somewhat feels like Made in Abyss but without the reality altering properties of the Abyss's lower stratum. Or maybe I stated this way too early since this is a statement made after reading the first chapter. Overall, the concept is great and the sense of mystery and adventure are rightfully...
This is nice. The MC is at least savvy with the happenstance surrounding himself and the heroine(?), and the generational gap in between them makes for a very fun yet nostalgic interaction. Thanks for picking this up!
As far as isekai returnee plot goes, this one is far better than the others... Well, except Isekai Ojisan of course. But that's besides the point. Thanks for translating this!
They don't even consider the fact that depiction of slavery in media can serve as a deterrence towards the spread of slavery in real life. (As dumb as that sounds.) A lot of shady things in the world happen precisely because people lack the awareness for them, i.e. insider trading, manufactured...
At some point I think they just want to outdo one another in term of how dramatic they can get their stories to. It's like a shounen battle manga in between degenerate NTR fetishists in real life. They're really trying very hard to stretch the term NTR so wide it looks like anything but.