In 2011, Yamaga participated in the S/mileage Shin Member Boshuu! audition, but did not pass.
She was active consistently until August 2012, when she suddenly became inactive, and her goods were no longer being sold, it was believed that she had withdrawn from the program. Her last performance was on August 26th, 2012. Her profile on the official website has since been taken down, confirming she had left.
On May 5, a fan reported via Twitter that they had met Yamaga at the Hello Pro Kenshuusei Happyoukai 2013 ~Haru no Koukai Jitsuryoku Shindan Test~ event and Yamaga told the fan that she was auditioning for Morning Musume's 12th generation. If this report was true, it was her last chance to get into Morning Musume before surpassing the age requirements.
- Name: Yamaga Kanae (山賀香菜恵)
- Nickname: Sanchan (さんちゃん)
- Birthdate: May 15, 1995
- Birthplace: Tochigi, Japan
- Blood type: O
- Western Zodiac: Taurus
- Eastern Zodiac: Pig (Boar in Japan)
- Hello! Project Status:
- 2011-11-12: Hello Pro Egg member
- 2012-08-26: Left
- UP-FRONT GROUP Status:
- 2011-11-12: Joined UP-FRONT AGENCY
- 2012-08-26: Left
- Hello! Project groups:
- Hello Pro Kenshuusei (2011–2012)
- She was the second member of Hello! Project to be from Tochigi prefecture.
- On a rainy day she would watch anime at home or sing the song "LOVE Namida Iro" by Matsuura Aya.
- She participated in the 2011 S/mileage audition, and made it to the final round. Her number was #716.
- Has said she was moved by Mano Erina when watching her concert DVD.
- She is a huge fan of Nishino Kana and Mano Erina.
- She was the oldest out of all the Hello Pro Kenshuusei during her time in the program.
- Was praised as having the best cartwheels in class at school.
- She withdrew before the debut of her generation mate, Oda Sakura
- When asked what group she'd like to debut in, she answered Morning Musume.
- There were clips of her in the Hello! Pro Kenshuusei DVD Magazine Vol.1.
- At her last Hello Pro Kenshuusei performance, she sang Mano Erina's My Days for You with other Kenshuusei.
- She had said she wanted to stay in Hello! Project, and continue singing, even when Mano Erina graduates.
Oldest Member of Hello Pro Kenshuusei