The Good: The story is unique and the characters are more mature than most. This manga doesn't shy away from scenery and setting changes which can be refreshing compared to most run of the mill Isekai/Fantasy manga that tend to lean a lot on their characters.
The Neutral: I personally like the OP MC tropes but they can be a little tired at times, which can be negative for some people.
The Bad: The main plot drags it's feet until you start to encounter new characters, which can lead to the manga feeling a little aimless at times.
To summarize: Not a bad manga at all and it is definitely worth a read if you like the reserved OP MC trope wrapped up in an Isekai/Fantasy setting complete with a "will they, won't they" love interest subplot.