Previous Next "Ougi Formula" (おうぎフォーミュラ, Ougi Fomyura) is the first episode of the Owarimonogatari anime series, first broadcast on October 3, 2015 as a one-hour special episode. The episode was directed by Kazuki Ohashi and Tomoyuki Itamura, who also did the episode's storyboard, with screenplay by Yukito Kizawa. Koyomi Araragi suddenly finds himself a "victim" of a locked room mystery with Ougi Oshino. In order to escape the room, Ougi presses Koyomi to revisit a painful memory that shaped his personality in the past.