Considering that MU says this thing is up to seven volumes, does anybody know if this thing actually goes anywhere, narratively speaking, or does it mostly stay in the vicinity of torture-porn? (And by 'anywhere', I'm including Ijousha no Ai which is the first thing that comes to mind in the same general field, which is, frankly, a rather low bar to clear considering some of the plot holes are big enough to have holes of their own...)