User blog comment:Kuriani/Brook's "Soul Solid"/@comment-4504442-20111019164616

I know right? I was confused too. Maybe its not a devil fruit ability. The devil fruit ability just allows brook to revive from the dead. Its probably the ability of the "soul" to have a connection between the human world and the soul world. Maybe its the soul's ability to convey the feelings of the other world to the human world.