Primary

• Hideki Motosuwa Student of Takako Shimizu
• Hideki Motosuwa Owner of Chii
• Hideki Motosuwa Friend of Hiromu Shinbo
• Hideki Motosuwa Co-worker of Yumi Oomura

Extended

• Chii [s]Twin sister[/s] of Freya
• Chii [s]Daughter[/s] of Chitose Hibiya
• Hiromu Shinbo Student of Takako Shimizu
• Hiromu Shinbo [s]Boyfriend[/s] of Takako Shimizu
• Hiromu Shinbo Owner of Sumomo
• Hiromu Shinbo Friend of Hideki Motosuwa
• Takako Shimizu Teacher of Hideki Motosuwa
• Takako Shimizu Teacher of Hiromu Shinbo
• Takako Shimizu [s]Girlfriend[/s] of Hiromu Shinbo
• Yumi Oomura [s]Girlfriend[/s] of Hiroyasu Ueda
• Yumi Oomura Co-worker of Hideki Motosuwa