Jun Mochizuki’s The Case Study of Vanitas (Japanese: ヴァニタスの手記, Hepburn: Vanitasu no Karute) is a gas-lamp fantasy manga series. It has been serialized in Monthly Gangan Joker since December 2015. Volume 1 collects the first four chapters.
Steampunk Paris! Second only to London in the technological marvels it introduced to the 19th century world, Paris will astound country bumpkin vampire Noé Archiviste — should he manage to reach it.
Noé has been dispatched by his master in quest of the infamous Book of Vanitas. Rather conveniently for the vampire, the book will come to him.