Primary

• Ui Hirasawa Younger Sister of Yui Hirasawa
• Ui Hirasawa Classmate of Jun Suzuki
• Ui Hirasawa Classmate of Azusa Nakano

Extended

• Yui Hirasawa Older sister of Ui Hirasawa
• Yui Hirasawa Friend of Ritsu Tainaka
• Yui Hirasawa Friend of Azusa Nakano
• Yui Hirasawa Friend of Tsumugi Kotobuki
• Yui Hirasawa Friend of Mio Akiyama
• Yui Hirasawa Friend of Nodoka Manabe
• Azusa Nakano Friend of Ritsu Tainaka
• Azusa Nakano Friend of Tsumugi Kotobuki
• Azusa Nakano Friend of Mio Akiyama
• Azusa Nakano Friend of Yui Hirasawa