Primary

• Rei Ogami Classmate of Sakura Sakurakouji
• Rei Ogami Classmate of Aoba Takatsu

Extended

• Sakura Sakurakouji Best friend of Aoba Takatsu
• Sakura Sakurakouji Step-daughter of Yuki Sakurakouji
• Sakura Sakurakouji Step-daughter of Goutoku Sakurakouji
• Aoba Takatsu In love with Sakura Sakurakouji