Compared to the previous books, this one felt more tedious for me. There’s not much of story going on here but there’s a lot of Maths, specifically, logic. Being honest, Logic is not my cup of tea, so I struggled liking this book. However, Hiroshi Yuki helps you to understand the Gödel incompleteness theorems in a more comprehensive way.
An interesting introduction to Godel's Incompleteness Theorems. Starting with number theory, set theory, formal systems, and logic, the book slowly builds up the knowledge required to understand Godel's proof. It tries to avoid metaphysics and philosophical discussions by having its characters constantly dissuade each other from trying to make grandiose statements about mathematics being "incomplete", sticking mostly to an explanation of Godel's proof.
For those looking for some development to the actual Math Girls "story", there is a hint about where the main character ends up in a short epilogue, but there's more math than story. Perhaps the manga covers that in greater detail.
Not as entertaining as the other books in the series, in my opinion. Maybe that's due to me not being so keen on meta-mathematics that this book is all about. Also, I would have liked the plot to progress a little bit more. Still, an interesting journey to Gödel with these Japanese students.