From the literal translation of the word
toku, meaning "house. In Japan, Otaku means somebody with an obsession. From anime, manga, vedeo games, computers, to things from train sets,
stamps,
spoons, ect.
In the
8o's, Otaku was used for a Japanese case where an obsessed fan
murdered a voice actress for not sounding th way he invisioned his favorite character.
Otakus in Japan tend to be under-weight with poor
hygen and little to no life outside of their obsession, i.e. only leaving outside of their home for their care or additions to their collection of what they are obsessing over. Thus, having their society look down upon them.
In the U.S., fans of anime and manga tend to mix up Otaku for "
guru", or master. A large amount of
the fans of products of Japanese entertainment tend to view Otaku as a good thing. Otaku, in the West, normally means "fan of anime/manga/video-games".
The "otakus" of the US. tend to be over-weight, have poor hygen, and have little to no life outside of their own obsession.
People in the U.S. tend to make jokes about "otakus" and their Western version of "Comic-Book
Junkie" to live in their
parent's basement while obsessing with their collectables.