There isn't much flavour when it comes to world building other than this place and that place. The names of the place is only of importance, generally speaking. And again, emphasis on meeting people. His connections are what expands the world, which is quite interesting. It's similar to Sousou no Frieren and Fumetsu No Anata E in which places doesn't hold much importance besides their names, but the people do. The story leans more like Fumetsu since its more linear and the connections are made on the spot, unlike Frieren where it connects both the past and the present through flashbacks, revisiting places (I forgot that term :v), and historical contexts.
The story moves a bit fast; moving in terms of months and years unlike most stories which progresses by the days or by a few days and weeks. At least the story still retains the importance of some characters through that time progression.
There are some major events that happen in the story which supposedly has a big impact on the whole environment, but it was just left out as if it wasn't important. Imagine a your school or workplace had a sudden change in the top brass. A new principal, chairman, or CEO suddenly stepped down from their position and you brush it off as if it didn't matter in the slightest but in reality, it will have a big effect on the environment. It lacks any, if at all, political aspects. I understand that the story is mainly a slow (even if it progresses by the months and years) slice of life story with no solid goal, but c'mon.
The MC, himself, is quite a mystery specifically his past life. All that is knowns is that he reincarnated, has knowledge from his previous life, and is a young adult when he was isekaid. No info on his death, age, sex, work, etc. But we can assume that he was a him who died at the age of 30. Regarding his current self as an MC, besides him being happy-go-lucky and labelled as an eccentric to the general populace, there's really no depth to his character. He's a flat character. Sure, he's cheery and gets serious but that doesn't add to his overall personality. In galges, it's like he's your typical friend A who gives advices and helps out from time to time.
One other thing that I've noticed is that, even if he reincarnated from contemporary Japan (probably), he doesn't use his 'knowledge' from his past life that often. I think it's good in a way that 1.) it's unlike other isekais where they use their 'knowledge' to the extreme and even shape the whole world like The Executioner and Her Way of Life, 7 Super High Schoolers something or other, and majority of isekais, 2.) it acts as an aid or complement to the story.
There are a few things that are questionable such as getting the top position with skill alone or, as per usual, Japan-themed things in a European-esque fantasy world, or claiming to have received something very important even if there is absolutely nothing to be gained. As for the top position, although it's a bit of a spoiler, they say you can become even king just by being super skilled in something (i.e. being a Dwarven King just by being the best blacksmith). That is something.... quite stupid in my honest opinion. Japan-themed trope, we all know. Kimonos, dojos, practice swings, Japanese names, dogezas (kowtow), all these besides the morality and ethics of contemporary Japan. Quite stereotypical and out-of-place. Lastly for gaining something, you ask someone to teach you a certain skill and the teacher leaves you alone without teaching you anything and leaves on a journey. The teacher returns after a few years but then the student says he needs to leave. Teacher apologises that he has not taught you anything (because it's true) but student says that he has learned a lot (of the skill) and even tells the teacher to spread his skill to future generations. I can't think of a simpler way of explaining it but it's quite BS.
All in all, the review became a rant one way or another. It might be just me since I tend to think of things in a more logical and rational way. If you just want to read for readings sake while looking for other stories to read, then this is manga is alright. If you want something that has more depth (in terms of world building, character depth, and plot/goal), then I suggest reading something else.
