Primary

• Shiho Tsukishima Daughter of Seiya Tsukishima
• Shiho Tsukishima Daughter of Asako Tsukishima
• Shiho Tsukishima Sister of Shizuku Tsukishima

Extended

• Shizuku Tsukishima Daughter of Seiya Tsukishima
• Shizuku Tsukishima Daughter of Asako Tsukishima
• Shizuku Tsukishima Sister of Shiho Tsukishima
• Shizuku Tsukishima Girlfriend of Seiji Amasawa
• Shizuku Tsukishima Best friend of Yuko Harada
• Seiya Tsukishima Husband of Asako Tsukishima
• Seiya Tsukishima Father of Shizuku Tsukishima
• Seiya Tsukishima Father of Shiho Tsukishima
• Asako Tsukishima Wife of Seiya Tsukishima
• Asako Tsukishima Mother of Shizuku Tsukishima
• Asako Tsukishima Mother of Shiho Tsukishima