Bibbidiba

"Bibbidiba" (ビビデバ, Bibideba; stylized in uppercase on English-language platforms) is a 2024 song by Hoshimachi Suisei, a VTuber affiliated with Hololive Production. Written entirely by Vocaloid producer Tsumiki for Hoshimachi's Sheenderella Day livestream with her idea of a "Reiwa Cinderella" aura in mind, it is a disco song about Hoshimachi's desire for freedom from a boring life. A mockumentary music video combining live-action scenes with animation, where Shigeo Osako plays a director whom Hoshimachi is fed up with for forcing her to wear high heels for a dance number, was directed by experimental art duo MimicryMeta.

"Bibbidiba" was praised for its themes on freedom and anti-discrimination, as well as the music video's confrontation between the director and Hoshimachi, and it drew comparisons to the eponymous folk tale depicting Cinderella, especially with Hoshimachi's free-willed nature. It charted in the top 25 of several Oricon and Billboard Japan charts, including #5 on the Billboard Japan Download Songs chart, as well as in the top ten of the Billboard Japan Singapore, South Korea, and Thailand charts. Additionally, its popularity remained throughout the rest of the year, charting in the Billboard Japan 2024 Hot 100 chart and being common-place in 2024's annual music playlists. Its music video rose to popularity in social media, especially the dance at the ending, and it became the fastest VTuber music video to reach ten million views and 100 million views that year.