Mayu Morita is a high school girl who rarely speaks, not because she doesn't like to talk nor because she has nothing to say, but because she thinks too much before speaking, thus losing altogether the timing to speak.

• Kana Hanazawa
• Ami Nanase
• Masatoshi Kī
• Haruka Tomatsu
• Saori Hayami
• Yoshino Nanjo
• Rie Yamaguchi
• Kouta Ooshita