Primary

• Hironobu Okushiro grandfather of Yuki Okushiro
• Hironobu Okushiro Father of Komachi Okushiro

Extended

• Yuki Okushiro Childhood friend of Sana Takagi
• Yuki Okushiro Childhood friend of Shun Takagi
• Yuki Okushiro granddaughter of Hironobu Okushiro
• Yuki Okushiro Daughter of Komachi Okushiro
• Komachi Okushiro Mother of Yuki Okushiro
• Komachi Okushiro Daughter of Hironobu Okushiro