Mio
美緒
| Mio美緒 | |
| Hair | Brown, Intake, Twin Tails, Waist Length+ |
| Eyes | Green |
| Body | Pale, Slim, Teen |
| Clothes | Dress, Hair Tie |
| Role | Younger Sister |
| Subject of | Sex Change |
| Visual novels | Main character - Kyoudai☆Henshin Nau Main character - Kyoudai☆Henshin Nau +α de Ni! |
| Voiced by | Hiiragi Mafuyu |