This is by far the most tiresome isekai I've ever read. The MC's schtick has long since gotten old. The author has one joke and it's long since worn out its welcome.
"OH GEE GOLLY ARE YOU TELLING ME THIS GIGANTIC EARTH DRAGON IS ACTUALLY SUPER VALUABLE? AHYUK WHO COULDA GUESSED! SHUCKS WHO...
"Demons are evil."
"NOOO ARGH THIS CAN'T BE HAPPENING, THE CREATURES THAT REPRESENT THE PERSONIFICATION OF EVIL HAVE TO ACTUALLY BE JUST ANOTHER RACE TRYING TO SURVIVE, AAAARGHHH WHY ISN'T THIS LIKE ALL THE OTHER MANGA"