Itsuka Tenma no Kuro Usagi

Taito Kurogane has spent years feeling that something essential is missing from his life. After surviving an accident that should have killed him, he remembers Himea Saito, a powerful vampire who gave him seven lives and was torn away from him when they were children.

Reunited at last, Taito and Himea find that the ancient spell separating them is only part of a much larger danger. Alongside the gifted student council president Gekkou Kurenai and the demon Mirai, they are drawn into a conflict of magic, broken promises, and enemies determined to control Himea's power.