Primary

• Shouta Tanoue Childhood friend of Midori Oono
• Shouta Tanoue In love with Aya Takayashiki
• Shouta Tanoue Classmate of Ryuuji Yoshioka

Extended

• Aya Takayashiki Friend of Emilia
• Aya Takayashiki Friend of Midori Oono
• Aya Takayashiki Friend of Miki Taekasa
• Ryuuji Yoshioka Classmate of Shouta Tanoue
• Midori Oono Friend of Miki Taekasa
• Midori Oono Friend of Emilia
• Midori Oono Friend of Aya Takayashiki
• Midori Oono Subordinate of Takeru Kinjou
• Midori Oono Childhood friend of Shouta Tanoue