Primary

• Kiminobu Kogure Friend of Takenori Akagi
• Kiminobu Kogure Friend of Hisashi Mitsui

Extended

• Takenori Akagi Older Brother of Haruko Akagi
• Takenori Akagi Friend of Hisashi Mitsui
• Takenori Akagi Captain of Ryota Miyagi
• Takenori Akagi Friend of Kiminobu Kogure
• Hisashi Mitsui Friend of Kiminobu Kogure
• Hisashi Mitsui Friend of Takenori Akagi
• Hisashi Mitsui Teammate of Ryota Miyagi