In 2010, Fukumura participated as a backing dancer in two of Erina Mano's music videos, "Haru no Arashi"[5] and "Onegai Dakara...".
She sang "Maji Bomber" by Berryz Kobo and reached the third round before being informed that she had not passed the audition.
Project 2011 Winter "Kangei Shinsen Matsuri" concert on January 2, where Fukumura also worked as a backing dancer with other Hello!
[8] When the producer of Morning Musume, Tsunku, announced the result live on stage, it was a complete surprise to Fukumura that she had been chosen to enter Morning Musume as a ninth generation member with audition winners Erina Ikuta, Riho Sayashi and Kanon Suzuki.
[citation needed] Fukumura (along with Iikubo Haruna) was appointed a sub-leader of Morning Musume at Tanaka Reina's graduation concert on May 21, 2013.
On April 18, 2012, it was announced that Morning Musume's 9th and 10th generation members, along with Tanaka Reina, would star in a stage play titled Stacey's Shoujo Saisatsu Kageki.
On November 9, Fukumura participated in a birthday FC event, alongside Iikubo Haruna and Ishida Ayumi.
On November 15, Fukumura participated as a guest at Ishikawa Rika's FC event.
On November 23, Fukumura made an appearance at Takeuchi Akari's birthday FC event.
On December 27, Fukumura's 2012 Alo-Hello Digital Photobook was released, It was met with much success on the Ugosha+ website.
On January 23, she appeared in Junon magazine with fellow Morning Musume members Michishige Sayumi, Ishida Ayumi and Oda Sakura.
It was announced that Fukumura would be participating in a stage play titled Gogakuyuu (ごがくゆう).
Project shop in Akihabara with Michishige Sayumi, Iikubo Haruna and Fukuda Kanon.
On January 7, 2014, Fukumura made a gravure appearance in Young Gangan, she was also the cover girl.
A making of DVD for the magazine issue was released on March 20 with Young Gangan vol.
On March 1, the official Morning Musume Twitter account tweeted that she would be absent from upcoming events due to influenza.
On March 27, Fukumura's second solo DVD, Pancake, was announced through online store websites.
On November 24, Fukumura and Ishida Ayumi announced they would hold a joint fan club bus tour the next year on January 26 and 27, titled Morning Days Happy Holiday Fukumura Mizuki･Ishida Ayumi Fanclub Tour in Yamanashi.
Project at the Morning Musume '23 Concert Tour Aki "Neverending Shine Show ~Sanctuary~" Fukumura Mizuki Sotsugyou Special in Yokohama Arena.