Primary

• Ryou Marufuji Childhood friend of Fubuki Tenjouin
• Ryou Marufuji Older Brother of Shou Marufuji

Extended

• Shou Marufuji Friend of Juudai Yuuki
• Shou Marufuji Friend of Asuka Tenjouin
• Shou Marufuji Friend of Chumley Huffington
• Shou Marufuji Younger Brother of Ryou Marufuji
• Shou Marufuji Friend of Daichi Misawa
• Shou Marufuji Friend of Tyranno Kenzan
• Fubuki Tenjouin Teacher of Jun Manjoume
• Fubuki Tenjouin Brother of Asuka Tenjouin