The other day I finished reading "Ghost in the Sell 2: Man-Machine Interface". I would say that it's been the hardest manga I've yet to read for a number of reasons.
Firstly is the language used. For quite a lot of the time it is using self-made technical terms, meaning that you are constantly having to look in the small print at the bottom or side of the page to find what the author is actually on about.
Also, while the art in the book is great and increadibly detailed, it does make it harder to actually read the book because your distracted by everything. The fact that at least half the book is in colour, and uses quite a lot of bright colours makes it even harder.
Firstly is the language used. For quite a lot of the time it is using self-made technical terms, meaning that you are constantly having to look in the small print at the bottom or side of the page to find what the author is actually on about.
Also, while the art in the book is great and increadibly detailed, it does make it harder to actually read the book because your distracted by everything. The fact that at least half the book is in colour, and uses quite a lot of bright colours makes it even harder.