Girl that's 'The Affairs of the Other World Depend on the Corporate Slave' plot, you should read it if you haven't yet !
It's obvious The Titan's Bride was supposed to be a 'smut without plot' story but I don't know why the author stills write chapters about it, like Papa Datte, Shitai. But they didn't create the story with a big lore in mind so now it's hard to create plotlines that are interesting or relevant...

A couple times as I was reading I remembered he used to be a high schooler that played basketball. The series, on the other hand, seems to have completely forgotten. I feel like a different backstory could have made Kouichi, & the whole story, so much more entertaining.
The biggest thing I'd wanna change is where he is in life when he's isekaied. I feel like a college au (probably 20 or early 20's) would give us something similar to his current story while not feeling as weird, but maybe I'm the only one still kinda icked whenever I remember how young he's supposed to be.
A bigger change, & better imo, is making him a lot older (probably 27-30 idk) & having him be in a job/earning a degree for something that would end up helping him be the ruler of a kingdom. A lawyer is my top pick, but a doctor in a fantasy world would be cool, or (even more out there) some type of electrician or mechanical engineer. I find it funny thinking of people that get isekaied explaining earth's "magic" of electricity since it's never in these worlds. I'm also a big older uke fan ლ(´ڡ`ლ)
It's obvious to me the story doesn't care about him being a human from earth given how they keep calling him a dwarf, & him having an actually compelling backstory would definitely change the plot as it is, but I believe it would be better. Maybe I'm the only one, but I had to tell somebody.
Unrelated to the rant, those uncensored panels went crazy shout-out to whoever uploaded them