First things first, I absolutely loved the world that Spirit Migration shows us readers. It's a fantasy world with magic, a mix of old European/medieval-esque culture, monsters with all sorts of size and stature, and best of all - adventurers!
Much like the amnesiac-protagonist, we start off knowing nothing about this manga or what it has to offer. What information we do learn comes from our protag's interactions with other monsters and humans. This is fantastic as it helps us better understand the world of Spirit Migration, but leaves just enough mystery that we remain curious.
The author utilizes a similar method when introducing readers to the
characters: each of them are unique in their own rights, and while we learn about both major and minor characters, there are still just enough unanswered questions and blank spaces to keep us engaged and feeling that yes, these feel like genuine, believable characters.
The story is very solid and flows smoothly from page to page. Each chapter ends off on an interesting cliffhanger - it's not so intense that you feel the need to resolve it, but more of the kind that plays to your innate curiosity. Unfortunately, given its short runtime, this does not work very well in Spirit Migration's favor.
Overall, a summary:
+ Fantastic world and characters.
+ Great story flow, a fun read.
- Rushed ending due to serialization being canceled.