Saikyou no Kyuuketsuhime wa Imouto ga Hoshii!!

A powerful vampire tribe known as the True Bloods once ruled over all others on the continent of Ephenia. After a thousand years of absence, the tribe's most gifted royal daughter, Ristia, awakens in the present day. Despite her immense strength, magical abilities, and striking appearance, she claims to be an ordinary girl. Her goal is to find a younger sister. She embarks on a fantasy journey filled with fanservice as she searches for the sibling she longs for.