Japanese fans have noticed that animator Hiroko Kazui’s online resume lists Owarimonogatari, along with Transformers: Robots in Disguise, Kōfuku Graffiti, Nisekoi and Maria the Virgin Witch, as her 2015 productions. Kazui previously did storyboard work for Hanamonogatari.
Owarimonogatari comprises three volumes of light novels and is the twelfth part of the Monogatari series. The novels contain the stories of Ougi Formula, Sodachi Riddle, Sodachi Lost, Shinobu Mail, Mayoi Hell, Hitagi Rendezvous, and Ougi Dark. The original light novels were released in October 2013, January 2014, and April 2014.
Studio Shaft have said they have plans to adapt all of the Monogatari series of novels.
https://www.youtube.com/watch?v=SG0qP2V_2A4
