Mahou Tsukai no Hako: Starlit Marmalade

After Shiki Tohno recovered from his accident as a child, he discovered that he could see “lifelines” of things, be it living or non-living. Shortly after he returns to his home however, he unexplainably kills a girl, only to find that she, known as Arclueid the vampire, comes back to him and demands that he protect and help her for killing her. Thus begins a series of adventures that Shiki and Arclueid will go through to rid the world of vampires and demons. The manga predecessor to the hit game, Melty Blood. *Source: Anime News Network*