Yeah Silver seren doesn t explain what source exactly he has in mind when he says the topic is obviously notable I see a few dozen of hits in Ninja boom literature where this term is always presented as an item in a list This doesn t make it a topic At the very most it makes for a wiktionary entry Silver seren if this is your approach to research for writing articles I am not surprised we do not have a Shinobi iri page that is worth the space it takes on the server s harddisk