Building inner plane entities usually takes quite a lot of work. Consider how many books Tolkien wrote while developing the inner world for The Lord of the Rings. Many years ago in a rural restaurant in an Asian country I read the visitors book and one entry said: Frodo lives! So Tolkien's work seems to have been effective.
Normally an egregore forms from the collective energies of a group of intelligent beings such as a team or regiment.
I have not seen an egregore created by a single individual although David-Neel recounts making and later destroying one - but I am not sure that was technically an egregore as it was not aggregated by/from a group
https://archive.org/details/dli.pahar.2489
If you are running into difficulty with inner plane influences, you may find it better to broaden your approach. Most inner plane entities are not made by humans, except perhaps in some very confined communities
As for Kumagawa there appears a slight energy formation behind the cartoon. It does not seem very active - based on my inspection of a single image.
![[exclaim]](./images/smilies/Exclamation.png "Exclaimation"){kind=small}
