Nagano Mio is a member of Nankini!. She joined the group on July 17, 2019 with their reformation.
- Name: Nagano Mio (永野澪緒)
- Birthday: January 6, 2001 (age 20)
- Zodiac: Capricorn
- Height: 156cm
- Hobbies: Watching idols, sleeping
- Special Skills: Going to bed early and getting up early, sleeping anywhere
- Favorite Things: Grandma's cooking, cucumbers