Taken from Wikipedia. I knew about it because a colleague mentioned to me the night before while visiting the Tokyo Tower.
In Japan, Ksitigarbha, known as Jizō, or Ojizō-sama as he is respectfully known, is one of the most loved of all Japanese divinities. His statues are a common sight, especially by roadsides and in graveyards. Traditionally, he is seen as the guardian of children, particularly children who died before their parents. Since the 1980s, he has been worshiped as the guardian of the souls of mizuko, the souls of stillborn, miscarried or aborte