After Ononoki Yotsugi saves Araragi and Kanbaru, Araragi asks if he can take Kanbaru home because she needn’t get involved. But Yotsugi isn’t okay with that. Not only did Araragi promise her master Gaen Izuko that he’d bring Kanbaru to meet her, but by not only touching but punching the suit of armor, Kanbaru is already inextricably involved. Taking her home wouldn’t necessarily be the best thing for her safety. Yotsugi drives this point home by pressing her bare foot into Araragi’s face, which is a weird way to admonish someone!
So Araragi carries Kanbaru to the aforementioned rendezvous point. When she comes to, Kanbaru is so excited about being carried she locks her arms and legs around her upperclassman, demanding to remain on his back. But then she notices they’re going the wrong way, and after an hour, Araragi can’t find the right way.
Either due to the samurai or some other apparition (like the one that affected him and Mayoi), they’ve become lost. Araragi calls Gaen, but she just tells him to figure it out on his own, otherwise he’s of no use to her. Harsh! Anyway, it’s his cute, reliable, and above all extremely athletic underclassmen who bails them out of the situation by climbing a telephone pole and charting a route that doesn’t rely on conventional paths.
Due to the delay and detour, they don’t get to the rendezvous at the park until three in the morning, and Gaen is nowhere to be seen. Again, Kanbaru comes in handy quickly combing the park. She doesn’t find Gaen, but she does find Shinobu sleeping under a swing. She wakes up and tells Araragi she’s there because Oshino’s master (Gaen) intends to restore their (Shinobu and Araragi’s) pairing.
She also bears the marks of some kind of recent battle, which she says isn’t quite over yet. Sure enough, a figure starts to draw near to their position, silhouetted by the rising sun (or some other light)…a menacing figure with a giant crab claw. This has been some night!