Primary

• Kayo Shigeta Daughter of Kayo's mother
• Kayo Shigeta Friend of Kouji Nakajima
• Kayo Shigeta Friend of Akihiro Nawa

Extended

• Kayo's mother Mother of Kayo Shigeta
• Kouji Nakajima Friend of Kayo Shigeta
• Kouji Nakajima In love with Kayo Shigeta
• Kouji Nakajima Friend of Akihiro Nawa
• Kouji Nakajima Lover of Yuki Miyajima
• Akihiro Nawa Friend of Kouji Nakajima
• Akihiro Nawa Friend of Kayo Shigeta
• Akihiro Nawa In love with Yuki Miyajima