Primary

• Misaki Kirihara In love with Hei
• Misaki Kirihara Friend of Kanami Ishizaki
• Misaki Kirihara Daughter of Naoyasu Kirihara

Extended

• Hei Older Brother of Bai
• Hei In love with Yin
• Kanami Ishizaki Friend of Misaki Kirihara
• Naoyasu Kirihara Father of Misaki Kirihara