Primary

• Haruka Suzumiya Older sister of Akane Suzumiya
• Haruka Suzumiya Best friend of Mitsuki Hayase

Extended

• Akane Suzumiya Younger Sister of Haruka Suzumiya
• Mitsuki Hayase Best friend of Haruka Suzumiya
• Mitsuki Hayase In love with Takayuki Narumi