Bakemonogatari (化物語, is a Japanese light novel series, authored by Nisio Isin and illustrated by Vofan as a part of Kodansha Box.

Source: Wikipedia

Bakemonogatari centers on Koyomi Araragi, a third year high school student who is almost human again after briefly becoming a vampire. One day, a classmate named Hitagi Senjōgahara, who infamously never talks to anyone, falls down the stairs into Koyomi's arms. He discovers that Hitagi weighs only 5kg, in defiance of physics. After being threatened by her, Koyomi offers his help, and introduces her to Meme Oshino, a middle-aged homeless man who helped him stop being a vampire.

The series tends to introduce only one new heroine per chapter, each involved with a different "apparition". The events of the previous chapters play an important role in the subsequent ones. The series primarily focuses on conversations between characters; it contains a fair number of parodies of other series, as well as Nisio Isin's trademark word play and metahumor.