Primary

• Mika Kayama Friend of Shingo Tsukino
• Mika Kayama Daughter of Yoshiko Kayama

Extended

• Yoshiko Kayama Mother of Mika Kayama
• Shingo Tsukino Son of Ikuko Tsukino
• Shingo Tsukino Son of Kenji Tsukino
• Shingo Tsukino Friend of Mika Kayama