So here's the thing...
I've just recently installed the Definitive version (because it was seriously persistent every time I open my last version) and had downloaded the full/complete Bleach series in one go. One minute it was fine after all volumes were completely downloaded (I am sure it was since I was reading the downloaded files) and then the next thing I knew is that they were gone! seriously!
Is it because I have just allowed storage after the chapters were downloaded or is it the app?
(is it my error or is it the app?)
I tried back-up and restore but the contents I have recovered were the Favorites from my old version.
I've already uninstalled my old version after migrating the downloads from there but still no Bleach :(