Primary

• Mizuki Okiura Daughter of Renju Okiura
• Mizuki Okiura Daughter of Shoko Nadami
• Mizuki Okiura Younger Version of Mizuki Date
• Mizuki Okiura Classmate of Shoma Enda

Extended

• Renju Okiura Father of Mizuki Okiura
• Shoko Nadami Mother of Mizuki Okiura
• Mizuki Date Friend of Kizuna Chieda
• Mizuki Date Friend of Amame Doi
• Mizuki Date Partner of Aiba
• Mizuki Date Older Version of Mizuki Okiura
• Mizuki Date Adopted daughter of Kaname Date
• Shoma Enda Son of Yoneharu Enda
• Shoma Enda Classmate of Mizuki Okiura