 This access takes the form of an eshu, a mental voice within the head that provides information upon request and operates as a sort of sixth sense.The use of Granny Nanny is so widespread that the word has somewhat of a religious overtone (characters will often swear to Granny Nanny, for example).The story is eventually revealed to be narrated by Granny Nanny, speaking to Tan-Tan’s child as he is being born.