Tsutomu Miyazaki, "The Otaku Murderer", in 1989. According to studies published in 2013, the term has become less negative, and an increasing number of people now self-identify as otaku.
The subculture's birth coincided with the anime boom, after the release of works like Mobile Suit Gundam before it branched into Comic Market. The definition of otaku subsequently became more complex, and numerous classifications of otaku emerged.
Nomura Research Institute divided otaku into twelve groups and estimated the size and market impact of each of these groups. Other institutions have split it further or focus on a single otaku interest. These publications classify distinct groups including anime, manga, camera, automobile, idol and electronics otaku. The economic impact of otaku has been estimated to be as high as $18 billion.
The most common types of otaku in Japan are:
1. Anime / Manga Otaku
2. Cosplay Otaku
3. Game Otaku/Gamer
4. Idol & JPop Otaku (Wota)
5. Anime figure otaku
6. Train Otaku (Tetsudou Otaku)
7. Robot Otaku
8. Pasokon Otaku
10. Female History Otaku (Reki-jo)
11. Voice Actress Otaku (Seiyuu Otaku)
Shoko-tan is one of my favorite seiyuu :3
12. Military Otaku (Gunji Ota)
So which type of otaku are you? :)
Via Japan Talk, Wasabi
Photo credits to their respective owners :)