She subsequently appeared in the May edition of the magazine De-View, and was recruited by the Amuse Kids division of the talent agency Amuse Inc.[2] On May 6, 2015, Fujihira joined the Japanese idol group Sakura Gakuin during the Sakura Gakuin 2015 Transfer Ceremony, along with fellow transfer-ins Soyoka Yoshida, Momoko Okazaki, Mirena Kurosawa, Maaya Asō, and Marin Hidaka.

[6] On May 6, 2019, at the Sakura Gakuin 2019 Transfer Ceremony held at the Bunkyo Civic Center, she became the ninth Student Council President of the group.

[7] In June 2019, Fujihira became one of the three rotating support dancers, called the Avengers, for the kawaii metal band Babymetal, along with Momoko Okazaki and Riho Sayashi.

Continuing her activities with @onefive under the mononym Kano,[19] she has, on occasion, co-written lyrics, created choreographies, and produced stage lighting for her girl group.

[20][21][22] In August 2021, she was cast in a stage adaptation of the manga Town of Evening Calm, Country of Cherry Blossoms as Kyōka Ōta.

[25] On February 2, 2022, she released her first album with @onefive, titled 1518, and pronounced ichi-go ichi-e.[26] In March 2022, Fujihira was cast in a stage adaptation of the manga Umimachi Diary as Suzu Asano.

[27] On November 6, 2022, Fujihira and the rest of her girl group made their major label debut with Avex Trax when their digital single "Miraizu" (未来図) was released.

[29] Her vocals as ChamJam were included on the second disc of the two-disc album I Live For You (きみのために生きてる, Kimi no Tame ni Ikiteru), released by Pony Canyon on May 10, 2023.