Primary

• Rinko Yamato Girlfriend of Takeo Gouda
• Rinko Yamato Friend of Makoto Sunakawa
• Rinko Yamato Friend of Nanako Yamazaki

Extended

• Makoto Sunakawa Friend of Takeo Gouda
• Makoto Sunakawa Friend of Rinko Yamato
• Makoto Sunakawa Younger Brother of Ai Sunakawa