The anime will adapt stories from both the 11-volume Itō Junji Kessaku-shū (Junji Ito Masterpiece Collection) series and the Fragments of Horror book.
Ito’s Uzumaki and Tomie manga have inspired inspired live-action adaptations, and his GYO manga inspired an OVA.
ComicsOne has published his Flesh Colored Horror manga, Dark Horse Comics has published his Museum of Terror manga, and Kodansha Comics has published his Junji Ito’s Cat Diary: Yon & Mu manga.
Viz Media has published these three titles, as well as Ito’s Fragments of Horror manga in English.