@kuma
I personally like the way how the author is handling the world building by expanding It as the story progress. Knowing everything from the start is boring, since there is no sense of adventure. :x
I also think that the action is a nice touch, without It we would be left with endless dialogues explaining how things happened, and why did they happen that way. Again, that would be boring. :s
As for the exposure, I don't think It's exaggerated, and I like seeing and knowing how things work and why they work the way they do. Mangas that just skip through the details and just briefly explain things after all is said and done, even If that does speed up the pace of the story, are the very definition of "boring" for me. :u
Well, that's just my personal opinion, I don't expect other people to agree with me.