Primary

• Ichika Orimura Brother of Chifuyu Orimura
• Ichika Orimura Childhood friend of Houki Shinonono
• Ichika Orimura Childhood friend of Huang Lingyin

Extended

• Chifuyu Orimura Sister of Ichika Orimura
• Houki Shinonono Younger Sister of Tabane Shinonono
• Houki Shinonono In love with Ichika Orimura
• Houki Shinonono Childhood friend of Ichika Orimura
• Huang Lingyin In love with Ichika Orimura
• Huang Lingyin Childhood friend of Ichika Orimura