Finally yet another isekai I can totally get into aside from Natsume Akatsuki's stuffs.
OP skills and Japanese tech? Not here bruh😂
Also people complaining about the french castle spelling should just chill and pretend it's one of those Japanese quirk of using foreign words (incorrectly)because it looks cool
You know this is the disappointing modern fantasy world you end up in, if you reincarnate after some actually competent Japanese Hero advances the culture.
Chateau typo (page 15 and two out of three tries on page 16) has already been mentioned by a proper Frenchie earlier in the comments thread, so I'll just suggest that the "Wizard" on page 11 could have a TL note about it being in the sense of "old virgin". XD