Kagari-gari,

過狩り狩り

ONE_SHOTfinished2013

Synopsis

"There is a human-hunting case which has thrown a town into confusion. The culprit is a vampire...A boy wielding a sword appears in front of the violent vampire?!" - official synopsis (translated) Kagarigari is one of the 70th Shonen Jump Newcomer Treasure Award-winning entries and is the prototype to Kimetsu no Yaiba. (Souce: Anilist)