Yamazaki Mei was born on June 28, 2005 in Hokkaido, Japan.
In 2014, Yamazaki auditioned to become a model for Ciao Girl magazine.
On July 16, it was announced that the successful applicants of the Hello! Project "Hokkaido Gentei" Member Audition would join the newly established trainee branch, Hello Pro Kenshuusei Hokkaido. Yamazaki was officially introduced as one of the first seven members on July 30 at the Hello! Project 2016 SUMMER ~Sunshine Parade~ concert in Sapporo alongside Oota Haruka, Sato Hikari, Ishiguri Kanami, Kawano Minori, Kudo Yume, and Kitagawa Ryo.
On May 6, Yamazaki won the judge's singing award at the Hello! Project Kenshuusei Happyoukai 2018 ~Haru no Koukai Jitsuryoku Shindan Test~ event for her performance of "Wonderful World (English Ver.)".
On May 4, Yamazaki won the judge's character award at the Hello! Project Kenshuusei Happyoukai 2019 ~Haru no Koukai Jitsuryoku Shindan Test~ event for her performance of "Mugen Climax".
On June 22, she was announced as a 15th generation member of Morning Musume '19 alongside Morning Musume '19 LOVE Audition winners Okamura Homare and Kitagawa Rio. She had her last performance as a Hello Pro Kenshuusei Hokkaido member in the Hello! Project Kenshuusei Happyoukai 2019 6gatsu ~Midori~, which ended on June 16. She and the rest of the 15th generation members were introduced on stage during the Hello! Project 2019 SUMMER concert tour from July 13 and will begin performing with the group in the Morning Musume '19 Concert Tour Aki.
On August 28, Kitagawa, Okamura, and Yamazaki held their debut fanclub event, Morning Musume '19 15ki Member FC Event, at Yamano Hall.
On September 5, the 15th generation members began a fanclub-exclusive web talk show, titled Three stations.
On August 21, she celebrated her 15th birthday at a fanclub event titled Morning Musume '20 Yamazaki Mei Birthday Event with two shows at LANDMARK HALL. In compliance with government policy, cheering, crowding, standing, and closeness in the venue were prohibited, and wearing masks were required to enter.
On June 28, she celebrated her 16th birthday at a fanclub event titled Morning Musume '21 Yamazaki Mei Birthday Event with two shows at LANDMARK HALL.
On May 23, it was reported that Makino Maria and Yamazaki Mei were diagnosed with COVID-19. Both of them underwent a PCR test at a medical institution after being classified as close contacts to Ishida Ayumi, who was diagnosed with COVID-19 a few days prior, and got a confirmed positive result. They will be taking a break from activities for the time being and will be resting at home. Currently, Yamazaki has no symptoms, while Makino has a slight fever and sore throat.
On June 28, she celebrated her 17th birthday at a fanclub event titled Morning Musume '22 Yamazaki Mei Birthday Event with two shows at Edogawa Cultural Center.
Yamazaki was in her sixth year of elementary school when she joined Hello Pro Kenshuusei Hokkaido and in her second year of middle school when she joined Morning Musume. As of April 2021, Yamazaki is currently in her first year of high school.
A list of nicknames that have been used to refer to Yamazaki Mei:
- Name: Yamazaki Mei (山﨑愛生)
- Nickname: Mei-chan (めいちゃん)
- Birthdate: June 28, 2005
- Birthplace: Sapporo, Hokkaido, Japan
- Blood Type: B
- Height: 160.4 cm (5 ft 3.1 in)?
- Western Zodiac: Cancer
- Eastern Zodiac: Rooster
- Hello! Project Status:
- UP-FRONT PROMOTION Status:
- 2016-07-30: Member
- Morning Musume Member Color:
- Bright Green
- Hello! Project Groups:
- Other Groups:
- Main article: Yamazaki Mei/Publications
-  Hello Dream. (ハロドリ。)
-  Hello! Project presents... "Solo Fes!"
-  Hello! Project presents... "Solo Fes! 2"
- [2016–] Hello! Project Station
- [2017–] Upcoming
- [2019–] tiny tiny
- [2019–] OMAKE CHANNEL
-  Hello Pro Kouhaku Taiko THE☆BATTLE 2019
-  Hello Pro ONE×ONE
-  Hello Pro no Oshigoto Challenge! 2
- [2016–2019] Hello! to meet you!
- [2019–] Morning Musume '19 no Morning Jogakuin ~Houkago Meeting~ (モーニング娘。'19のモーニング女学院〜放課後ミーティング〜)
- [2019–] Three stations (fanclub exclusive)
|Youngest member of Hello Pro Kenshuusei and Hello Pro Kenshuusei Hokkaido
July 2016 – August 2016
|Youngest member of Morning Musume
June 22, 2019 – June 29, 2022
- Morning Musume Profile
- Hello Pro Kenshuusei Hokkaido Profile (archived)
- Morning Musume 15ki Official Blog
|Hello Pro Kenshuusei Hokkaido|