A Dark Rabbit Has Seven Lives

いつか天魔の黒ウサギ

Taito Kurogane keeps dreaming about a vampire who claims to have already poisoned him, dismissing it as nothing until he survives an accident that should have killed him outright. The dreams turn out to be more than dreams: Himea Saito really is a vampire, and Taito's ordinary life folds into a much stranger one involving demons and a promise he doesn't remember making. This manga adapts the original light novel series.