Primary

• Greta Adopted daughter of Yuuri Shibuya

Extended

• Yuuri Shibuya Best friend of Ken Murata
• Yuuri Shibuya Son of Miko Shibuya
• Yuuri Shibuya Engaged to Wolfram von Bielefeld
• Yuuri Shibuya Son of Shoma Shibuya
• Yuuri Shibuya Younger Brother of Shori Shibuya