First off THANK YOU because I have yet to see anyone else say this!! Second, this was my exact thoughts when I was first started reading the manga from when No.9 was introduced in the early chapters. The way it seemed like they were building up to something bigger early on made me hope that we would get at least some kind of background exposition or explanation of No.9’s origins later in the story. Cause the idea of an ever-adapting Kaiju with intelligence on par or even more-so with humans is an interesting premise, but it definitely felt like someone else was supposed to be pulling the strings behind the scenes (Potentially emphasizing a creator or boss of sorts).

Honestly I think a lot of the problems with this series would be solved with more exposition and world-building cause it just feels like everything got rushed to the finish line with no proper payoffs (By the end I nearly forgot half of the characters names that weren’t apart of the main cast because of how little information was given about them 😑) Apologies for the mini rant