As you know, one of kafra mission is using Deviruchi's Picture Book I ~ IV.
I got and used three kinds of these, from I to III, but didn't find IV.
I found some forum topics about this which tells there are some bugs and it's not fixed yet.
I wonder it's still impossible or I'm searching this in the wrong place - I thought I can get it from Deviruchis in Baphomet's Garden.