Primary

• Haru Kaidou Older Brother of Aki Kaidou
• Haru Kaidou Older Brother of Shima Kaidou

Extended

• Aki Kaidou younger brother of Haru Kaidou
• Aki Kaidou Twin Brother of Shima Kaidou
• Shima Kaidou younger brother of Haru Kaidou
• Shima Kaidou Twin Brother of Aki Kaidou