Not that everybody out there is a good parent who raises good kids, but it really makes me wonder how Kishin would end up with such a feeling of insecurity. Surely being the son of the almighty Shinigami would be some insurance of safety, no?

Eibon and Shinigami also had connections, but I'm not sure where Kraco made the link that he directed a C&D at Eibon. Regardless, the current harvesting of Demon Tools seems like "continuing the development" in that sense. I've got an unexplainable feeling that it's to uproot Shinigami's soul.