I'm not actually talking about the manga series, but the novel:no, i havent read the novels since its rare for me to read manga nowadays.
Really, really good book.
Not to mention gigantic. Be prepared to spend a good amount of time with it
I managed to score a physical copy of this when it was on sale at Gamestop because it seemed interesting and I ended up loving it. Its too bad its off PSN now would have loved it on the PSP Go but ohh well still have that physical copy.