aka Otsuichi. 1978年生於日本福岡縣，豐橋技術科學大學畢業。 1996年，年僅17歲的他以《夏天．煙火．我的屍體》贏得第6屆「JUMP小說大賞」，一鳴驚人。2003年，他再以《GOTH斷掌事件》榮獲第3屆「本格推理小說大賞」，該書並被改編成電影和漫畫。 他的創作範圍極廣，多變的風格讓喜愛他的讀者將他的作品分為驚悚懸疑的「黑乙一」和悲傷療癒的「白乙一」，但作品裡往往黑中有白、白中有黑，難以單一風格概括而論。 著有《GOTH斷掌事件》、《只有你聽到CALLING YOU》、《失蹤HOLIDAY》、《寂寞的頻率》、《花與愛麗絲殺人事件》，合著有《殺死瑪麗蘇》等書。 Associated Names: * Otsuichi * 乙一 (Japanese Profile) * โอตสึ อิจิ (Thai Profile)

Otsuichi (乙一, Otsuichi?), also known as Eiichi Nakata and Asako Yamashiro, is the pen-name of Hirotaka Adachi (安達 寛高), born 1978. He is a Japanese writer, mostly of horror short stories. He made his debut with Summer, Fireworks, and My Corpse while still in high school. Major works include the novel Goth, which was made into a manga, and the short story collection Zoo, which was made into a movie. Tokyopop has released his short story collection Calling You, and will release Goth in November. His short story F-Sensei's Pocket appears in the English language edition of Faust.