Series by 水城せとな

A new chapter begins in a world shaped by vampire plants that inhabit the bodies of the dead and reproduce with human women. Dimitri and Alice once lived with others of their kind in a mansion called Seijakukan. After their time there, a young man remains alone at that place. Then someone carrying the legacy of Alice and Dimitri appears before him. Love, lineage, and the strange rules of these beings return to disturb his quiet life.