Having met with Nadeko - and more specifically her new Snake God form - Kaiki is keen to speak face-to-face with Senjougahara to update her on his progress.
Thus, the pair meet and head for Mister Donut, wherein Kaiki surprises Hitagi somewhat by stating that not only is everything in hand, but that tricking Sengoku into not killing Araragi, Shinobu and Senjougahara will be a piece of cake.