sisTer PriNceSs

Wataru Minakamia genius graduating middle school is all set to attend a prestigeous high school with his other genius friends. However he finds out he failed his entrance examinations and when he arrives home he is kidnapped and taken to a remote island. After he is given a key and directions to a mansion, he finds there are girls inside claiming to be his sisters. He tries to live his day to day life with the twelve girls who all claim to be his sisters and love him dearly.