Koyomi leaves Karen behind at home to talk with Senjougahara. Senjougahara seems to be planning on confronting and murdering Kaiki. When he comes back home, he learns Karen has wandered off, while still sick.

A recap episode retalling the events of Bakemonogatari's Tsubasa Cat and the entirety of Nisemonogatari, narrated by Koyomi. During the summer vacation after all the apparition-related incidents around the five girls have been resolved, Koyomi Araragi's two risky younger sisters – the self-proclaimed heroes of justice, Karen and Tsukihi – become involved in some trouble.