Primary

• Kururi Orihara Twin Sister of Mairu Orihara
• Kururi Orihara Younger Sister of Izaya Orihara

Extended

• Izaya Orihara Older Brother of Kururi Orihara
• Izaya Orihara Older Brother of Mairu Orihara
• Izaya Orihara In love with Shizuo Heiwajima
• Mairu Orihara Twin Sister of Kururi Orihara
• Mairu Orihara Younger Sister of Izaya Orihara