Primary

• Asuma Arima Son of Kojirou Arima
• Asuma Arima Brother of Taichirou Arima
• Asuma Arima Son of Sayaka Arima

Extended

• Taichirou Arima Son of Kojirou Arima
• Taichirou Arima Older Brother of Asuma Arima
• Taichirou Arima Son of Sayaka Arima
• Kojirou Arima Father of Asuma Arima
• Kojirou Arima Father of Taichirou Arima
• Kojirou Arima Husband of Sayaka Arima
• Sayaka Arima Mother of Asuma Arima
• Sayaka Arima Mother of Taichirou Arima
• Sayaka Arima Wife of Kojirou Arima