Tatsuhiko Takimoto is a Japanese novelist born on September 20, 1978, who emerged as a distinctive voice in contemporary Japanese fiction in the early 2000s. He is best known as the original creator behind the Welcome to the N.H.K. franchise, which began as a novel before expanding into a manga series and an anime adaptation.

Takimoto made his literary debut in 2001 with the novel Negative Happy Chainsaw Edge, which received a special category award at the fifth Kadokawa Gakuen Awards. This early recognition set the stage for his most famous work, the novel Welcome to the N.H.K., published by Kadokawa Shoten on January 28, 2002, with cover illustration by Yoshitoshi ABe. The story of a young hikikomori struggling with social withdrawal, conspiracy theories, and psychological distress would become his signature work.

The Welcome to the N.H.K. franchise expanded significantly when Takimoto himself wrote the story for a manga adaptation, which began serialization on June 24, 2004, in Shōnen Ace magazine with artwork by Kendi Oiwa. The manga ran until June 2007, spanning eight collected volumes. This was followed by a twenty-four episode anime television series produced by Gonzo, which aired in Japan from July to December 2006. The original novel was also adapted into a live-action film in 2007, and his debut novel Negative Happy Chainsaw Edge received a live-action film adaptation in 2008, along with a manga adaptation in Monthly Shōnen Jump illustrated by Saiki Junichi.

Takimotos creative identity is deeply intertwined with the themes of social withdrawal, depression, and the struggles of otaku and hikikomori subcultures that pervade his work. In afterwords published in various editions of the Welcome to the N.H.K. novel, he revealed personal experiences with these conditions. In a December 2001 afterword, he stated that he was a hikikomori and still recovering, noting that the themes addressed were not things of the past but currently active problems. In an April 2005 afterword, he candidly admitted to struggling with writers block, stating that he had not written a single new story since N.H.K. and had been reduced to a NEET living as a parasite on royalties from the book.

Beyond his most famous work, Takimoto has authored several other novels and contributed to literary anthologies. His published works include Chojin Keikaku in 2003, Ecco in 2004, Boku no Air in 2010, Moo no Shōnen in 2011, and Light Novel in 2018. He also participated in Live at Faust, an anthology published by the literary magazine Faust, contributing a story and taking part in a collaboratively written relay novel alongside other young writers of his generation. Several novels he serialized in magazines like Faust experienced delays in collected publication while he undertook extensive revisions.

Takimotos significance in the anime and manga industry stems from the cultural impact of Welcome to the N.H.K., which offered one of the most unflinching examinations of hikikomori and NEET culture in Japanese popular media. His willingness to draw directly from personal experience lent authenticity to works that resonated with audiences both in Japan and internationally. His career has been characterized by periods of creative struggle following the success of his breakout work, making his trajectory as an artist as compelling as the stories he creates.