Primary

• Takao Hiyama Teacher of Yukiteru Amano
• Takao Hiyama Teacher of Yuno Gasai

Extended

• Yukiteru Amano Son of Rea Amano
• Yukiteru Amano Son of Kurou Amano
• Yukiteru Amano Student of Takao Hiyama
• Yukiteru Amano In love with Yuno Gasai
• Yuno Gasai In love with Yukiteru Amano
• Yuno Gasai Friend of Mur Mur
• Yuno Gasai Student of Takao Hiyama
• Yuno Gasai Rival of Aru Akise
• Yuno Gasai Adopted daughter of Saika Gasai
• Yuno Gasai Adopted daughter of Ushio Gasai