Shingetsutan Tsukihime [Manga]

Shiki Tohno is just an average high school student who is ordinary in every way except one: ever since a freak accident brought him inches away from death, he has been able to see lines on people and objects. If he traces these lines with a cutting tool, he can slice through them regardless of the length of the blade or the thickness of the object being cut. One day, while walking home to his new residence at his family’s mansion after nearly a decade living apart from them, he passes by a stunningly beautiful woman and suddenly becomes possessed by an overwhelming desire to kill her. After using his ability to cut her up into 17 pieces of meat, he is understandably shocked to find her alive and incredibly pissed the following day. The woman reveals she is a centuries-old vampire named Arcueid Brunestud and demands that he lend his help to atone for killing her.