Final answer:
The term 'otaku' is used for individuals deeply involved in the anime and manga subculture, and 'reluctant insiders' suggests they are knowledgeable insiders who may simultaneously contend with negative social perceptions or a desire for wider acceptance.
Step-by-step explanation:
The term otaku originates from the Japanese language and refers to people with obsessive interests, particularly in anime and manga. The phrase reluctant insiders may suggest that these individuals are insiders because of their intensive knowledge and participation within the otaku subculture, but reluctant perhaps due to a recognition of the negative social stigma that being an otaku can carry in mainstream society. This reluctance might also stem from a tension between their deep involvement in a community and a desire for broader social acceptance.
Otakus possess a profound connection and commitment to their interests which often translates into a vast knowledge of their chosen subject matter. However, the term can carry various connotations, including reclusion or excessive fandom. Despite these possible interpretations, it's important to understand otaku within the context of the community's contribution to the richness and diversity of pop culture globally.