Primary

• Tsukasa Tenma Older Brother of Saki Tenma
• Tsukasa Tenma Friend of Rui Kamishiro
• Tsukasa Tenma Friend of Emu Ootori
• Tsukasa Tenma Friend of Nene Kusanagi
• Tsukasa Tenma Childhood friend of Touya Aoyagi

Extended

• Touya Aoyagi Childhood friend of Tsukasa Tenma
• Touya Aoyagi Friend of Akito Shinonome
• Touya Aoyagi Friend of Ann Shiraishi
• Touya Aoyagi Friend of Kohane Azusawa
• Touya Aoyagi Teammate of Akito Shinonome
• Touya Aoyagi Teammate of Ann Shiraishi
• Touya Aoyagi Teammate of Kohane Azusawa
• Rui Kamishiro Teammate of Tsukasa Tenma
• Rui Kamishiro Teammate of Emu Ootori
• Rui Kamishiro Teammate of Nene Kusanagi
• Saki Tenma Younger Sister of Tsukasa Tenma
• Saki Tenma Childhood friend of Honami Mochizuki
• Saki Tenma Childhood friend of Ichika Hoshino
• Saki Tenma Childhood friend of Shiho Hinomori