Primary

• Kouhei Shinomiya Twin Brother of Ryouhei Shinomiya
• Kouhei Shinomiya Younger Brother of Kei Shinomiya
• Kouhei Shinomiya Younger Brother of Aoi Shinomiya

Extended

• Ryouhei Shinomiya Twin Brother of Kouhei Shinomiya
• Ryouhei Shinomiya Younger Brother of Kei Shinomiya
• Ryouhei Shinomiya Younger Brother of Aoi Shinomiya
• Aoi Shinomiya Younger Brother of Kei Shinomiya
• Aoi Shinomiya Older Brother of Ryouhei Shinomiya
• Aoi Shinomiya Older Brother of Kouhei Shinomiya
• Kei Shinomiya Older Brother of Aoi Shinomiya
• Kei Shinomiya Older Brother of Ryouhei Shinomiya
• Kei Shinomiya Older Brother of Kouhei Shinomiya