Primary

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

Extended

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