Are you sure he isn't a reincarnated Japanese? You caught yourself before putting the answer in English acronyms and Japanese order, but then you translated the numbers.
Did you put the numbers in Japanese order?
"female cooks" um. . . ok. Maybe a translation bit.
Black tux, white shirt, black bowtie. . . The military men are in formal uniform, but there's another "guest" with the same attire. Are you a waiter? Is the thought balloon covering up a drinks tray?
Elf housewife gives me Lodoss War vibes. I think in one of the series, the human characters got switched out with teenagers and treats Deedlit like an aunt.
I wish the author had a better way to introduce a side characters' antagonists. The Duel had no in-story reason to be performed since the demotion was a literal act of god. Defecting to another country would be easier by not putting the entire country on high-alert.
I find it funny that the message says "heights of Ancient Magic." I mean, I get it. It's magic so old, the ancient wizard calls it ancient (instead of just calling it Magic in general).
Ok, she's bringing a gun to school and from her father's reaction, that's not a gun school.
On the plus side, it's not a western sword school where the protag will stroke the katana ego.
So . . . black company worker is a fan of anime where self-insert gets fired, joins a new party, and kills his former boss.
Not gonna question that part, eh?
Is this "epidemic" the same nonsense where isekais treat rice as animal feed?
I'll give the author the benefit of the doubt, that this epidemic is to the crop itself.
That bit about reusing glass containers of unsold products got me googling toxic materials in glass.
If you find your isekai protag leaving the glassworks to unverified producers, do mind the lead.
First thing to pop in my head to draw yourself: reference a pose from Venom of Guilty Gear. The suit and staff made me think "billiards mafia."
Second thing: Angel/Anzel from Nia Liston: the Merciless Maiden.