Synopsis
Preparing for his college entrance exams, Koyomi Araragi notices that his reflection has disappeared from mirrors, a characteristic common to true vampires. Worried about this physical change, he turns to the doll-like Yotsugi Ononoki and her master, the immortal aberration specialist Yozuru Kagenui, for help. After swiftly identifying the problem, Kagenui gives Araragi a harsh choice: he must either cease using the vampire abilities granted by Shinobu Oshino or lose his humanity forever.
Background
Tsukimonogatari adapts the first volume of NisiOisiN's Monogatari Series: Final Season.