Dareka wo Norawazu ni Irarenai Kono Sekai de

Those who make contracts with devils gain the power to curse others to death. Their mortal enemy: the Curse Detective Kiyoharu Saeyama, who uses traces of the curses left on their victims to uncover the identities of these sick killers. Let this deadly, paranormal game of psychological warfare begin!

(Source: Yen Press)