10musume 121314 01 Azusa Sasaki

: The success of this release demonstrated that viewers were moving away from over-the-top "Idol" productions in favor of more grounded, relatable content. Digital Distribution

In late 2022, the group released a second album, , which marked a shift toward more narrative-driven tracks. The lead single “121314 01” —a title that reads like a coded date (12 / 13 / 14 / 01)—was conceived as a “time‑capsule” song, each numeral representing a pivotal moment in the members’ personal timelines. The track’s production employed a hybrid of EDM drops, traditional Japanese string sections, and a spoken‑word bridge that listed key dates in the group’s history. Its cryptic title sparked intense fan discussion across social media, propelling the song to #7 on the Billboard Japan Hot 100—10MUSUME’s highest chart position to date. 10musume 121314 01 azusa sasaki

These solo endeavors reinforce her public image as a someone who brings depth and artistic integrity to the idol world. : The success of this release demonstrated that

In early 2020, the production company announced a bold experiment: a “10‑member idol project that would give each girl a distinct narrative voice.” The name 10MUSUME (十むすめ, “ten daughters”) was selected to convey both the group’s size and its intended familial image. Unlike many conventional idol groups, 10MUSUME was designed around a rotating‑line‑up system where each member could pursue solo activities (acting, modeling, songwriting) while still contributing to the collective’s releases. The track’s production employed a hybrid of EDM