Bakemonogatari, volume 5

Suruga Kanbaru, the biggest celebrity in school, lives in a completely different world from Koyomi Araragi, but their worlds collide when Koyomi finds that this campus star has been stalking him for some unknown reason. Koyomi soon connects the dots, but before he can land on the truth, Suruga tells all and reveals how she had a "hand" in another strange event in Koyomi's life.