Primary

• Haruma Kawagoe Older Brother of Choko
• Haruma Kawagoe Neighbor of Makoto Ashirai
• Haruma Kawagoe Tenant of Chitose Serikawa

Extended

• Chitose Serikawa Landlord of Haruma Kawagoe
• Chitose Serikawa Landlord of Makoto Ashirai
• Choko Younger Sister of Haruma Kawagoe
• Makoto Ashirai Neighbor of Haruma Kawagoe
• Makoto Ashirai Tenant of Chitose Serikawa