まにまに is a Vocaloid-original song by producer r-906, first released as the title track of his 2022 album. The song features Hatsune Miku on lead vocals with IA and KAFU providing chorus support, an unusual three-synthesizer arrangement that gives the track a layered, ensemble feel uncommon in standard Vocaloid singles. The music video was created by illustrator and animator ウエダツバサ (Ueda Tsubasa), whose distinctive visual style complements the song's energetic, slightly unhinged atmosphere. The title まにまに is an older Japanese expression meaning "as one wills" or "in accordance with," and appears in the lyrics within the phrase 神のまにまに ("according to the gods' will"). Thematically, the lyrics revolve around madness, dancing, and the pursuit of ideals, a self-aware narrator grapples with being perceived as insane while defiantly continuing to sing and dance. This lyrical framing aligns with the song's celebratory yet anxious production style, built around a driving 174 BPM beat with r-906's trademark blend of electronic and pop sensibilities. まにまに was added to maimai でらっくす FESTiVAL PLUS on August 18, 2023. Its in-game collection title is 踊れ ("Dance"), earned by playing the song ten times, a direct callout to the song's central refrain. The MASTER chart, designed by カマボコ君, sits at Lv. 12+ (12.7) and features a notably high Slide-note count (116) that challenges players with rapid, flowing patterns. The EXPERT chart was designed by サファ太. The song later appeared in CHUNITHM LUMINOUS PLUS in November 2024, extending its reach across SEGA's rhythm game lineup.