Anzai has also appeared in several TV shows, such as M Aisubeki Hito ga Ite (M愛すべき人がいて; M: There's Someone I Love) and Nihon Tōitsu Hokkaidō-hen (日本統一 北海道編; Unity of Japan: Hokkaido).

In junior high school, her father took her to a Rolling Stones concert; Anzai noticed a saxophone player in the backing band, which inspired her to begin learning to play the instrument herself.

[1] In her third year of junior high school, she won the gold prize at the Shonan Regional Brass Band Competition, and again in the ensemble round; she describes this time of her life as "very passionate", coming in early every morning to practice alone.

This marked the first time the brand had worked with a female solo artist, the decision lining up with her debut single "Sekai no Subete Teki ni Kanjite Kodoku Sae Itoshite Ita" on May 1, 2019—the first day of the Reiwa era.

[6] Anzai's own interest in gyaru fashion led to initial coverage as the "post-millennial gal", her music also remarked on as being "classic jpop" and of a "90s revival" style.

The show, based on a novel written by Narumi Komatsu, was a retelling of both Hamasaki's debut years and her relationship with producer Max Matsuura (played by Shohei Miura) in the 90s and early 2000s.

[19] In 2024, Anzai appeared in the TV drama Rikon Shinai Otoko - Sare Otto to Waru Yome no Damashi-ai (離婚しない男-サレ夫と悪嫁の騙し愛; The Man Who Doesn't Divorce), and became a semi-regular guest on the variety show Bukapi!

As she grew older, she began to enjoy classical and pop music in addition to rock and jazz, and has named Ariana Grande, Alicia Keys, and Selena Gomez as her contemporary inspirations.

[24] Anzai has used many genres throughout her releases, such as electro-pop, hip-hop, brass band, acoustic ballad, bedroom-pop, and rock, and often experiments in her composition and music production style.

"[26] While he praised her writing and composition abilities, Matsuura admitted to planning her debut to have a 90s style due to that first impression; this led to Anzai being labelled "the girl inheriting the legacy of Avex's divas" by the media.

[28] Some of her work is also inspired by movies and novels, Anzai listing Snakes and Earrings, Helter-Skelter, and Thirst (2013) as stories that have "made (her) want to start writing lyrics immediately".

[32] She made her debut on the reality TV show Niji to Ōkami ni wa Damasarenai (虹とオオカミには騙されない; Don't be Fooled by Rainbows and Wolves) in 2021 during her third year of high school.