The original light novel 'Welcome to the N.H.K.' written by Tatsuhiko Takimoto was first published in Japan, introducing the story and characters that would later be adapted into anime and manga.
The anime adaptation of 'Welcome to the N.H.K.' was broadcasted in Japan, gaining popularity for its portrayal of social withdrawal and otaku culture.
The anime was officially licensed for English release, making the series accessible to a wider international audience.
A manga adaptation of 'Welcome to the N.H.K.' was published, expanding on the story and reaching different audiences.