First of all, apologies for keeping everyone waiting for so long for news on this, making a book is not as simple as it seems!
However, we're finally able to give you all a sneak peek at the Senko no Ronde 2 Materials Guide, a hard-covered, glossy, 64 page art book with info on the characters, the Rounders and more to boot!
More details soon via the official home page: http://senkoro.com/en/products