Primary

• Rio Kamishiro Younger Sister of Ryouga Kamishiro
• Rio Kamishiro Friend of Kotori Mizuki
• Rio Kamishiro Friend of Tetsuo Takeda

Extended

• Kotori Mizuki In love with Yuma Tsukumo
• Kotori Mizuki Friend of Tetsuo Takeda
• Kotori Mizuki Friend of Rio Kamishiro
• Kotori Mizuki Rival of Cathy Katherine
• Kotori Mizuki Rival of Orbital 7
• Kotori Mizuki Daughter of Mrs. Meadows
• Ryouga Kamishiro Friend of Kite Tenjo
• Ryouga Kamishiro Friend of Yuma Tsukumo
• Ryouga Kamishiro Older Brother of Rio Kamishiro
• Ryouga Kamishiro Former enemy of Four
• Tetsuo Takeda Friend of Yuma Tsukumo
• Tetsuo Takeda Friend of Kotori Mizuki
• Tetsuo Takeda In love with Rio Kamishiro
• Tetsuo Takeda Friend of Cathy Katherine