Primary

• 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

Extended

• Akito Hayama Significant Other Sana Kurata
• Akito Hayama Younger Brother of Natsumi Hayama
• Akito Hayama Friend of Tsuyoshi Ohki
• Aya Sugita Friend of Hisae Kamayai
• Aya Sugita Friend of Mami Suzuki
• Aya Sugita Friend of Sana Kurata
• Aya Sugita Girlfriend of Tsuyoshi Ohki
• Naozumi Kamura In love with Sana Kurata
• Naozumi Kamura Half-brother of Sicil Hamilton
• Fuuka Matsui Former girlfriend of Akito Hayama
• Fuuka Matsui Friend of Sana Kurata
• Mariko Sakai Daughter of Mariko Sakai
• Mariko Sakai Half-sister of Sana Kurata
• Tsuyoshi Ohki Friend of Akito Hayama
• Tsuyoshi Ohki Friend of Sana Kurata
• Tsuyoshi Ohki Boyfriend of Aya Sugita
• Tsuyoshi Ohki Older Brother of Aono Ohki
• Mami Suzuki Friend of Aya Sugita
• Mami Suzuki Friend of Hisae Kamayai
• Mami Suzuki Friend of Sana Kurata
• Hisae Kamayai Friend of Aya Sugita
• Hisae Kamayai Friend of Sana Kurata
• Hisae Kamayai Friend of Mami Suzuki
• Hisae Kamayai Friend of Shinichi Gomi
• Takeshi Gojo Father of Sana Kurata
• Takeshi Gojo Former husband of Keiko Sakai
• Keiko Sakai Mother of Sana Kurata
• Keiko Sakai Mother of Mariko Sakai
• Keiko Sakai Former wife of Takeshi Gojo
• Misako Kurata Mother of Sana Kurata
• Rei Sagami "driver, manager, boyfriend, and pimp" to Sana Kurata
• Rei Sagami Boyfriend of Asako Kurumi