Primary

• Nagi Hirono Sister of Hiro Hirono
• Nagi Hirono Friend of Yuu Himura
• Nagi Hirono Sister of Hiro Hirono

Extended

• Hiro Hirono Friend of Miyako Miyamura
• Hiro Hirono Friend of Kei Shindou
• Hiro Hirono Friend of Kyosuke Tsutsumi
• Hiro Hirono Brother of Nagi Hirono
• Yuu Himura Guardian of Chihiro Shindou
• Yuu Himura Lover of Yuko Amamiya
• Yuu Himura Friend of Mizuki Hayama
• Yuu Himura Friend of Shuuichi Kuze
• Yuu Himura Brother of Akane Himura