User blog comment:Neowitch/Brain Pie and Living Man's Chest/@comment-972068-20120416121303/@comment-4493594-20120416131418

Not "used". The YomiYomi keeps Brook alive. So it's still active.

And in a similar way the OpeOpe keeps the people it slices into halves alive. I was wondering whether this keeping-something-alive drains Laws power in some way.