She joined the group in 2008, and left in 2011 when the group disbanded.
- Name: Suma Ai (須磨愛)
- Nickname: Ai
- Birthdate: April 15, 1992
- Birth Place: Osaka, Japan
- Blood Type: A
- Height: 154cm
- Western Zodiac: Aries
- Hobbies: Hair, nail coordination, clothing
- Specialty: Speed bike saddle
- Favorite Food: Umeboshi, green tea, potatoes, vegetables, liver, tuna, sea urchin
- Hello! Project Groups:
- SI☆NA (2008-2011)
- Her motto is "Always be polite, good rhythm, good energy".
- She thinks her charm points are her left tooth and her nails.
- She auditioned for Morning Musume's 7th generation, but lost to Kusumi Koharu.
- [2009.04.02-] Ahoyanen! Sukiyanen! (as part of "7's Style")