This looks like it could be a great show, but there's literally no reason for it to be an isekai. I actually think it's worse off for trying the whole "from another world" plot. I'm significantly more interested in the story of this country boy who had no freaking clue who his family is than another stereotypical salary man from Japan.
Everyone talking manga this and manga that. Whatever.
THIS IS GREAT!!!
Was worried I would have to write this off after all the comments from the manga readers - y'all come off as acting all superior & usually I'm not impressed. But if the first ep is any indication I might owe everyone an apology.
... you know, if this wasn't an isekai, it would be decent enough. The guy was around 25 when he died in the other world, so does it even matter that the grandpa didn't teach him common sense? There will be cultural things that he won't know, but he would still have some level of common sense. He doesn't seem to crazy right now, but I doubt I will watch this til the end.