True Vampires household who has the ability to transcend other races and once reigned as the ruler of the Ephenia continent!<br><br>Among them, the young princess, Ristia, who has the “Strongest” power, woke up after sleeping for 1000 years and revived in a different world, that is the present day!!<br><br>Her purpose is...wanting a cute little sister!!<br><br>Even in the different world, Ristia’s ability is overwhelmingly superior and the surrounding people can only be astonished at how easy the job that she does…<br><br>Now, can Ristia become an ordinary girl and get a cute little sister...!?<br><br>A fantasy story of an overwhelmingly strong vampire princess who is searching for a sister while behaving recklessly and running around noisily!