Tsukimonogatari
English name: Tsukimonogatari
Genres: Comedy, Mystery, Supernatural, Ecchi
Type: TV, Episodes: 4
Aired: Dec 31, 2014
Studio: Shaft
Source: Light novel
Rating: R - 17+ (violence & profanity)
Synopsis:
Koyomi Araragi is studying hard in preparation for his college entrance exams when he begins to notice something very strange: his reflection no longer appears in a mirror, a characteristic of a true vampire. Worried about the state of his body, he enlists the help of the human-like doll Yotsugi Ononoki and her master Yozuru Kagenui, an immortal oddity specialist.

Quickly realizing what is wrong with him, Yozuru gives him two choices: either abstain from using the vampiric abilities he received from Shinobu Oshino, or lose his humanity forever.