Otaku (Japanese pseudonym: おたく, Roman pronunciation: otaku) is also called OTAKU, オタク. Often directly referred to as otaku, it generally refers to a special group of ACGN who have knowledge, appreciation, and play capabilities beyond ordinary people, and are passionate about this culture and have an in-depth understanding of ACGN.

Otaku also generally refers to people who are keen on other forms of subculture and have in-depth research on them, such as "sports otaku", "music otaku", "car otaku", "railroad otaku", "Military House", "Gun House", "Photography House", "Chemistry House", "Plant House", "Dialect House" and so on.

OTAKU has long been a world-recognized vocabulary and has been included in major English dictionaries (such as the English-Chinese Dictionary published by Shanghai Jiao Tong University and various Oxford Dictionaries published by Oxford University). It is also included in authoritative dictionaries. , OTAKU is often defined as: (Japanese) computer fan, Internet bug. But this is only a narrower definition. In fact, the term OTAKU has a very broad coverage.

Nowadays, the term "otaku" and "otaku" mentioned in the Chinese-language media mostly refers to squatting at home, which has nothing to do with otakus. It is purely because people outside this group misunderstand that its literal meaning is "home" in Mandarin. And mistakenly thought it meant "residence", which resulted in a wording error. And due to simple thinking and long-term misuse, some people who insist on understanding "Zhai" as the abbreviation of "Otaku" object to the above usage and are disgusted. It is generally believed that Akio Nakamori, a social commentator, officially used this term to refer to this group for the first time in his column "Research on "おたく"" serialized in the monthly manga magazine "Manga Fukuro" in mid-1983. In Japanese, the words "OTAKU (オタク, ヲタク)" and "Otaku (お屋)" are originally honorific terms for other people's homes, meaning "your home" or "house", and are extended to be honorifics for each other. , meaning you, your family, etc. It means "your house" and "you" etc. When this word first appeared in the animation industry, it was just a general personal pronoun, which is what the dictionary means by "you". In the animation "Macross" (Macross), which began to be shown in Japan in 1982, the protagonists call each other "おたく" (you). According to research by the Nomura Research Institute, American animation began as early as the 1970s. Producers such as Haruhiko Shumoto and Masaharu Kawamori began to use this term to refer to each other, and later "おたく" was used as a pronoun for their entire ethnic group.

One of the founders of GAINAX, Toshio Okada, who calls himself "Otaking" and is known as "Otaku leader" and "Otaku leader", defines otaku. It is: "In this 21st century called "the explosion of image information," a new type of human race has emerged in order to adapt to this world of image information." In other words, it is a race of people whose sensitivity to images has extremely evolved; however, This is Okada's personal interpretation to beautify otakus, which is different from the concept promoted by mainstream media and accepted by the public who do not know the truth. First of all, he is enthusiastic about the field he is passionate about and has a deep understanding of this field.

Secondly, it has the adaptability to the explosion of mapping information and informatization, the cross-field divergence of data search and textual research, and the interpretation and research of every secret code prompted by the mapping creator. .

Third, the insatiable desire for self-motivation and self-expression, and the love and understanding of the field you are passionate about must be expressed through various channels.