|Beach Time Fun Ruby|
|Release Date||Feb 2, 2014|
- "The master gave me this swimsuit. Do I look cute? The master said I'd cause nosebleeds. That sounds awful."
- — Beach Time Fun Ruby
Ruby is the youngest of the Sanctus Circle of Ten. She has very potent magical power[s], but at the beach, she shows that she's actually still a kid at heart. She has a habit of judging people by their bust size, and often gets angry at the people around her.
- Personal rankings reward during the Typhoon Tower Event
|Voice actor (J)||高木恵|
|Voice actor (E)||Takagi Megumi|