|Spoiler Alert: This page contains spoilers. Read at your own risk.|
|Full Name||Saijou Kaya|
|Novel||Volume 9, Chapter 5|
|Manga||Volume 1, Chapter 5|
Saijou Kaya (西城 花耶) is Saijou Leonhart's older sister.
She took care of Leo when he was in the hospital after his first encounter with a "vampire". She doesn't seem to have any magical talent.