| Sato Ayano|
Also Known as
January 7, 1995
In the April issue of De☆View (released in March 2009), Sato Ayano appeared alongside Noto Arisa and Kaneko Rie as a Hello! Pro Egg member. On April 4th, she was officially introduced at the Hello! Project 2009 Shinjin Kouen 4gatsu ~Yokohama Hop!~ concert alongside Sezaki Azusa.
On March 3, a new unit was announced for Sato, Furukawa Konatsu, Mori Saki, Sekine Azusa, and Arai Manami. Later in March, a new television show titled Up Front Girls featuring the members of the unit as well as Sengoku Minami was announced. Soon afterwards, it was also announced that Sato, Sekine, and Arai had finished their training.
- Name: Sato Ayano (佐藤綾乃)
- Nickname: Ayanon (あやのん)
- Birthdate: January 7, 1995
- Birthplace: Kanagawa, Japan
- Astrological Sign: Capricorn
- Bloodtype: A
- Height: 152cm
- Shoe Size: 23cm
- Official Kaomoji: ﾉｨ｡6_6ﾘ
- Up Up Girls (Kari) Color: Purple
- Hobbies: Tennis
- Special Skill: Diving
- Favorite Subject: Maths, science, P.E.
- Favorite Color: Purple
- Favorite Food: Curry (with Natto)
- Friends: Takeuchi Akari, Fukumura Mizuki.
- Looks Up To: Natsuyaki Miyabi, Yaguchi Mari
- Favorite Hello! Project Songs: "Honto no Jibun", "Tokaikko Junjou"
- Treasured Item: Music Player
Discography Featured In
- Up Up Girls (Kari)
- Going my ↑
- Barebare I LOVE YOU
- Uppercut! / Yuudachi! Through the Rainbow
- Mechakyun♡Summer ( ´ ▽ ` )ﾉ
- Namen na! Ashi Girls / Marble Hero
- End Of The Season
- UPPER ROCK / Ichiban Girls!
- Chopper☆Chopper / Survival Girls
- Respect Tokyo / Sutorera! ~Straight Up!~
- SAKURA DRIVE / Dateline
- Next Stage / Ano Saka no Ue Made,
- Ginga Joujou Monogatari / Burn the fire!! / Natural Born Idol
- Summer Beam! / Up Up Typhoon
- SAMURAI GIRLS / Widol Seven
- Starry Night / Seishun Buildup
- Nijiiro Mosaic / ENJOY!! ENJO(Y)!!
- Ganbarou Nippon Ai wa Katsu Singers
- T-Palette mini All Stars
-  Honto ni Atta Kowai Hanashi 3D (ほんとうにあった怖い話3D)
-  Ada ~ADA~ (讐 ～ADA～)
- [2010–] PINK!SS
- [2011.04.02-] Up-Front Girls
-  Yuusha Yoshihiko to Maou no Shiro (勇者ヨシヒコと魔王の城)
-  Mano Erina - Onegai Dakara... (お願いだから・・・) (as back dancer)
-  Mano Erina - Genkimono de Ikou! (元気者で行こう!) (as back dancer)
-  "Akuma no Tsubuyaki" ~Akuma de Cute na Seishun Graffiti~ (「悪魔のつぶやき」～アクマでキュートな青春グラフィティ～)
- She loved to sing since she was little.
- She first appeared as a member in the April 2009 issue of De☆View magazine.
- She sang Buono!'s Honto no Jibun for her audition.
- She appeared as a backup dancer in the MV for Mano Erina's seventh major single and eighth major single.
- An anime character from High School Girls shares her name.
- Her official Up Up Girls color is purple.
- She is the only Up Up Girls member that is not a first generation egg.
- She shares a last name with Morning Musume member Sato Masaki and former NICE GIRL Project! Kenshuusei member Sato Maria.