How did an ordinary individual such as Kageyama Shigeo (a.k.a. "Mob") come to possess such a great amount of "psychic power?" From what we have seen so far, he seems to have almost unlimited power, however, where did this power really come from? Has Kageyama Shigeo really possessed such great power since birth or has it increased over time? Is it somehow related to the social aspect of his life (i.e. his maturing over time)?
Has he reached the limit of his ability, or is there still much that he is capable of? Or perhaps . . . there is some unknown "spiritual" entity existing within Kageyama Shigeo, allowing him to use its vast amount of power? Please let me know your thoughts on the subject of the origin of Kageyama Shigeo's psychic ability, and if you think he still has potential for even greater power.