The original novel was originally never intended to be released, as Monogatari author Nisio Isin was merely writing it for his own enjoyment as a sort of "fan fiction," but it ended up being released anyway. As such, Nisemonogatari infamously features a lot more fanservice and bizarre sexual material than it's predecessor. The series aired from January 8th, 2012 to March 18th in Japan with 11 episodes total.