This adaptation, if I remember correctly, is a remake. The other one who has a similar title and also in manga form as well and were released much more earlier and has better storytelling to it. Named "Around 40 Kenja no Isekai Seikatsu Nikki" only has a better storylines.
This on the other hand was mostly tiring than enjoyable. It's mostly full of inconsistencies and randomness where you would be appalled whether you were still reading the same series or not. Additionally, you would probably be weirded out by how much convoluted the story gets as you read it. Unless you want a very sophisticated kind of story, this is for you and it gets wilder and more unbelievable the more you read it. Yes, it's fictional but the plots are just thrown altogether, then it would simply dump a lot of info after that to sustain its justification.
The characters here are very wholesome. However, most of them aren't even fleshed out and even if some got a bit of character development, the story would ultimately just ignore them altogether or they go back into being a stranger to the readers. Even the MC looks like a stranger to me most of the time as he always spouts adult-wisdom like there's no tomorrow. There's no real character development here, and even if there were some, you wouldn't feel the change or the change feels non-existent most of the time. So before you try to ship someone to anyone, forget it. You will just be disappointed.
What's cool about this series is that... It's just a decent or an average read, for me at the very least makes it a chore to read it.
If only they could've fleshed out most of the characters and supporting characters introduced, I would've come to like this series more.
There are some characters who are definitely likable but it was only due to "tropes" or whatever you'd call it that made me like certain characters but most of the time, there really is nothing to like about them. Only certain characters are likeable but only some of them was given enough character development to be truly likable. The atmosphere, however, were mostly vague and comedic in serious situations.
The serious tone where it should be hilarious, most comedy routines, mostly fell flat.
This is a warning but also an introduction to what you will be getting. Have fun.
