Schedule Slip: Shaft had numerous issues meeting the production schedule for Bakemonogatari, meaning several shortcuts had to be taken in animation. This came to a head in episode 10, which was forced to air in an obviously half-finished state with color cards labeled "cut due to circumstances" taking the place of unfinished sequences. Animation quality recovered for the final two TV episodes, though episode 12 was broadcast with a narrower aspect ratio ("CinemaScope size") to save on animation costs. The web episodes are a whole other story: episode 13 took a month and a half to go online; episode 14, another three and change, followed by a three-month delay in the release date of the final DVD volume.
What Could Have Been: Shinobu was originally going to be voiced by Aya Hirano; in fact, she does voice the character in early drama CDs, and was even advertised in the credits of the first season as her voice actress. However, at this time she was having problems with her agency and the role given to Maaya Sakamoto by the time of the character's first major speaking part in Karen Bee.
Working Title: Monogatari Series Second Season was originally promoted as Zenmonogatari ("Every Story"). The title was changed possibly because not every story is covered; as the final title implies, it only covers the "second season" of the novel series—and with Hanamonogatari being cut at the last minute, it doesn't even cover the whole second season.