Primary

• Satan Father of Rin Okumura

Extended

• Rin Okumura Twin Brother of Yukio Okumura
• Rin Okumura Older Version of Rin Okumura (child)
• Rin Okumura Half-brother of Amaimon
• Rin Okumura Half-brother of Mephisto Pheles
• Rin Okumura Son of Satan