Primary

• Kaguya Yamai Twin Sister of Yuzuru Yamai
• Kaguya Yamai Friend of Tohka Yatogami

Extended

• Tohka Yatogami In love with Shidou Itsuka
• Tohka Yatogami Enemy of Kurumi Tokisaki
• Tohka Yatogami Rival of Origami Tobiichi
• Tohka Yatogami Friend of Kaguya Yamai
• Tohka Yatogami Friend of Yuzuru Yamai
• Tohka Yatogami Enemy of Ellen Mira Mathers
• Yuzuru Yamai Twin Sister of Kaguya Yamai
• Yuzuru Yamai Friend of Tohka Yatogami