I must say I really liked this manga. I do disagree with some of the comments saying the ending felt rushed or anticlimactic and the ending is not open-ended. The ending in my opinion was the ideal and most fitting one in their situation.
I loved the art, the atmosphere and also the development between the main characters. What kinda confused me was the beginning, it did a bad job in explaining the premise of the world clearly at first but it was not a big deal.
There is a lot of chapters but they are not really long so you can read it quite fast.
I do recommend though to read a better translation if it is available, I did not read it on mangabuddy myself.
Overall, I will definitely be reading this again someday.
5/5
A lot of things happened, you will cry for the characters and feel relieved sometimes, but the ending is the best. Read It!