Before A Vampire Bites Me ~ My very short days as the vampire princess's kin (Associated Names)

Masato Tanaka, an ordinary man living a normal life in human society. The morning after graduating from high school, his family mysteriously disappears, leaving only ashes on their beds as a clue. The police investigation reaches its limits, and the search is called off. One night, while returning from his night walk—a habit he had…