Primary

• Ayumi Sister of Mika
• Ayumi Sister of Yui
• Ayumi Fan of Sana Kurata

Extended

• Sana Kurata Lover of Akito Hayama
• Sana Kurata Friend of Aya Sugita
• Sana Kurata Friend of Fuuka Matsui
• Sana Kurata Friend of Hisae Kamayai
• Sana Kurata Friend of Mami Suzuki
• Sana Kurata Former girlfriend of Naozumi Kamura
• Sana Kurata managed by Rei Sagami
• Sana Kurata Friend of Tsuyoshi Ohki
• Sana Kurata Daughter of Misako Kurata
• Sana Kurata Biological Daughter of Keiko Sakai
• Sana Kurata Half-sister of Mariko Sakai
• Sana Kurata Biological Daughter of Takeshi Gojo
• Mika Sister of Mika
• Mika Sister of Yui
• Yui Sister of Ayumi
• Yui Sister of Mika