Primary

• Chiharu Tsubameya Childhood friend of Kinu Tanukikouji
• Chiharu Tsubameya Teammate of Torako Koshi
• Chiharu Tsubameya Teammate of Neko Nekoyamada

Extended

• Torako Koshi Older sister of Anko Koshi
• Kinu Tanukikouji Teammate of Torako Koshi
• Kinu Tanukikouji Childhood friend of Chiharu Tsubameya
• Kinu Tanukikouji Teammate of Neko Nekoyamada