Primary

• Takashi Murai Father of Yuuko Murai
• Takashi Murai Friend of Hajime Shibata

Extended

• Hajime Shibata Father of Tsugumi Shibata
• Hajime Shibata Friend of Takashi Murai
• Hajime Shibata Friend of Takashi Inagaki
• Yuuko Murai Daughter of Takashi Murai