"NHKにようこそ! (NHK ni youkoso!, Welcome to the NHK)" is a Japanese novel written by Takimoto Tatsuhiko and illustrated by Abe Yoshitoshi. It dealt with hikikomori. The manga iteration is illustrated by Ooiwa Kenji.
"NHK" in the title is not "Nippon Housou Kyoukai", the television broadcaster that served as the central plot point in the original novel, but "Nihon Hikikomori Kyoukai" (lit. "Japanese Anti-Social Corporation").
It was adapted into TV anime series and a manga series. Its anime title was altered to "N・H・Kにようこそ! (Welcome to the N.H.K.)" in consideration of NHK.
