First: At the last episode, Randy said that : "we just ask the ninja nomikon" and he said " what is that?" so no, the 1st ninja is not nomicon.
Second: i just think that some ninja named the book "nomicon"
Or the third : it can be because randy said that the book name is nomicon, so yeah
This would be awesome.
...Isn't that Nomi? o.o I think it is. >.>