Primary

• Hinata Aoi Twin Brother of Yuta Aoi
• Hinata Aoi Teammate of Yuta Aoi
• Hinata Aoi Roommate of Hiiro Amagi
• Hinata Aoi Roommate of Niki Shiina

Extended

• Yuta Aoi Twin Brother of Hinata Aoi
• Yuta Aoi Roommate of Kaoru Hakaze
• Yuta Aoi Roommate of Nagisa Ran
• Yuta Aoi Teammate of Hinata Aoi
• Hiiro Amagi Younger Brother of Rinne Amagi
• Hiiro Amagi Teammate of Aira Shiratori
• Hiiro Amagi Teammate of Mayoi Ayase
• Hiiro Amagi Teammate of Tatsumi Kazehaya
• Hiiro Amagi Roommate of Hinata Aoi
• Hiiro Amagi Roommate of Niki Shiina