Primary

• Ichiban Kasuga Adoptive brother of Ryo Aoki
• Ichiban Kasuga Ally of Tianyou Zhao
• Ichiban Kasuga Ally of Seonhee
• Ichiban Kasuga Ally of Taiga Saejima
• Ichiban Kasuga Ally of Goro Majima
• Ichiban Kasuga Ally of Masaru Watase
• Ichiban Kasuga Ally of Nick Ogata

Extended

• Ryo Aoki Adoptive brother of Ichiban Kasuga
• Ryo Aoki Partner of Hajime Ogasawara