Raised by a family which was not her own, Ryia took on the surname, Saito. Despite her features revealing that she was not entirely Japanese, Ryia was supposedly born within Japan yet, her parents she would never know. Ryia grew up as an adoptive child near the Sakurai Dai Gate. Of course, after rumors had begun to spread about it being haunted by ghosts, her family was told to move her away, yet they refused. Several other families had also lived close to these grounds and found nothing to be wrong whatsoever. As the years passed, Ryia lived with her adoptive family believing that they were her true parents. She was told the truth two days before her 19th birthday.