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That article is about a tool, not a technique. All characters who don't have the anime tag next to their names have used it in the manga at some point. The fact it doesn't have an official name means nothing, and is indicated in our infobox system by having the title in the infobox in italics, like every other unnamed character and technique. Omnibender - Talk - Contributions 02:28, September 1, 2011 (UTC)
Re: Unnamed articles
Many unnamed articles either have names revealed later in the plot (Dodai and Kotoamatsukami went on unnamed for many chapters, for example) or else in a databook. The Shield of Black Flames in particular is kept separate because Sasuke only used the name when creating the spikes, so that's what we list. If some official source shows that they were simply the same technique, the articles will be changed to reflect that. For example, before Mū and Ōnoki started fighting, we had an article for the conic version of Dust Release: Detachment of the Primitive World Technique, because it wasn't named when we first saw it. Omnibender - Talk - Contributions 18:40, September 1, 2011 (UTC)