Sakurazaka46 released the music video for 'Ai MUST BE' following the song's digital release on September 17. The track serves as the title for the group's 16th single, arriving on CD on October 14.

Third-generation member Airi Taniguchi holds the center position for this release. The music video draws inspiration from a bachelorette party on the eve of a wedding, exploring the tension between tradition and freedom. Taniguchi appears in a pure white dress as the focal point of both the narrative and the group's performance.

Director Hidejin Kato, who has previously worked on Sakurazaka46 videos including "Start over!," "Addiction," and "Kogen," helmed the project.