Troyca, DMM Pictures Reveal Shinobi no Ittoki Original Anime Series Set to Premiere This Year

Both companies credited with original planning for project

source https://www.animenewsnetwork.com/news/2022-02-22/troyca-dmm-pictures-reveal-shinobi-no-ittoki-original-anime-series-set-to-premiere-this-year/.182902