Primary

• 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

Extended

• Sana Takagi Sister of Shun Takagi
• Sana Takagi Childhood friend of Yuki Okushiro
• Sana Takagi Best friend of Airi Michioka
• Sana Takagi Childhood friend of Miori Tsukamine
• Shun Takagi brother of Sana Takagi
• Shun Takagi Childhood friend of Yuki Okushiro
• Shun Takagi Childhood friend of Airi Michioka
• Shun Takagi Childhood friend of Miori Tsukamine
• Hironobu Okushiro grandfather of Yuki Okushiro
• Hironobu Okushiro Father of Komachi Okushiro
• Komachi Okushiro Mother of Yuki Okushiro
• Komachi Okushiro Daughter of Hironobu Okushiro