Otaku

Otaku is お宅, literally your home, used in older Japanese as a formal and slightly distant second-person pronoun. The story fandom tells is that hobbyists at conventions in the early 1980s addressed each other that way, keeping everyone at arm's length, and outsiders picked the habit up as a nickname for the type. The critic Akio Nakamori printed the label in a 1983 magazine column, and it stuck as an insult.

For a decade in Japan it stayed one. The word implied someone who preferred drawings to people, and a 1989 criminal case that the press tied to a suspect's collection made the association far worse. Recovery took years and came partly from money: Densha Otoko, Akihabara's retail boom and studies putting the related market in the trillions of yen made the type harder to dismiss.

Outside Japan it never carried the same weight. English-speaking fandom adopted otaku in the 1990s as a self-description, closer to enthusiast than to recluse, and wore it on badges. Japanese speakers describing themselves now often prefer the softer word ota, or name the specific obsession, since the noun on its own still sounds like a diagnosis to some ears.