Primary

• Cathy Katherine In love with Yuma Tsukumo
• Cathy Katherine Rival of Kotori Mizuki
• Cathy Katherine Friend of Tetsuo Takeda

Extended

• Yuma Tsukumo Younger Brother of Akari Tsukumo
• Yuma Tsukumo Friend of Ryouga Kamishiro
• Yuma Tsukumo Friend of Kite Tenjo
• Yuma Tsukumo Friend of Kotori Mizuki
• Yuma Tsukumo Friend of Astral
• Yuma Tsukumo Friend of Tetsuo Takeda
• Yuma Tsukumo Friend of Three
• Yuma Tsukumo Friend of Cathy Katherine
• 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
• 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