Primary

• Rui Kamishiro Teammate of Tsukasa Tenma
• Rui Kamishiro Teammate of Emu Ootori
• Rui Kamishiro Teammate of Nene Kusanagi

Extended

• 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