Nmmn rule, originally known as Namamono rule, is made to keep the fans orderly and such. It is commonly seen on the Japanese side of the Internet, and used for contents that includes people in real life in those fictional works.
This is usually pertained to works about fantasies about those people, but it is not only limited to that.
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Understanding The Nmmn Rules
No FicciónA brief description of the namamono rules aka nmmn rules.
