Sekine Azusa (関根梓)
- Nicknames: Sekkii (せっきー)
- Birthdate: June 14,1996
- Birthplace: Nagano, Japan
- Blood Type: AB
- Zodiac: Gemini
- Height: 152.5cm (“I shrunk..”)
- Specialty: Dancing
- Dislikes: Running
- Favorite Food: Tuna, apples
- Least Favorite Food: Anything bitter
- Looks Up To: Niigaki Risa
Sekine Azusa joined Hello! Project as a member of Hello! Pro Egg in June 2004 when she passed the auditions alongside thirty-two other girls.
On March 3, 2011 it was announced that she would be part of a dance cover group called UFZS that represents Up Front and womens magazine Josei Jishin.
On March 10, 2011 it was announced that Sekine Azusa, alongside Kitahara Sayaka, Arai Manami and Satou Ayano had completed their training.
- Eat’s rice for breakfast.
- Has a habit of resting her chin in her hands.
- Her favorite spot is her chair at school.
- Sekine appeared as a backup dancer in the PV for Mano Erina’s second major single “Hajimete no Keiken“, and her sixth major single “Haru no Arashi“.
- Hello! Pro Egg (2004–2011)
- UFZS (2011-)