Primary

• Kunihiko Yagami Friend of Takamichi Gamou
• Kunihiko Yagami Student of Moriya-Sensei
• Kunihiko Yagami Former student of Hideto Tange

Extended

• Takamichi Gamou Student of Moriya-Sensei
• Takamichi Gamou Friend of Kunihiko Yagami
• Takamichi Gamou Former student of Hideto Tange
• Moriya-Sensei Teacher of Yuzuki Mikage
• Moriya-Sensei Teacher of Tamayo Shiina
• Moriya-Sensei Teacher of Sora Egami
• Moriya-Sensei Teacher of Nozomi Bitou
• Moriya-Sensei Teacher of Akie Takasugi
• Moriya-Sensei Teacher of Takamichi Gamou
• Moriya-Sensei Teacher of Kunihiko Yagami
• Moriya-Sensei Teacher of Chiriko Hamano
• Hideto Tange Former teacher of Takamichi Gamou
• Hideto Tange Former teacher of Sora Egami
• Hideto Tange Former teacher of Kunihiko Yagami
• Hideto Tange Former teacher of Tamayo Shiina
• Hideto Tange Former teacher of Nozomi Bitou
• Hideto Tange Former teacher of Akie Takasugi
• Hideto Tange Former teacher of Yuzuki Mikage
• Hideto Tange Former teacher of Itsuko Hiraishi
• Hideto Tange Former teacher of Takeru Yukawa