HIMITSUスパーク is a funk-pop track by the Japanese band カラスは真っ白 (A crow is white), featured in maimai PiNK as part of its launch lineup on December 9, 2015. The song was composed, lyricized, and sung by Kana Yaginuma, with arrangement by the band themselves and instrumental work from guitarist Kouhei Shimizu, bassist Jun Groovy Yoshiyama, and drummer Taihei. It runs approximately 2 minutes and 16 seconds and sits at a brisk 156 BPM, placing it squarely in the energetic pop-rock territory typical of the POPS&ANIME category. The song originally appeared on the band's third mini-album also titled HIMITSU, released in 2015. The band カラスは真っ白, whose name ironically means "a crow is white", was known for blending funk, pop, and rock elements, and for performing with a large, white mascot character on stage. Despite a relatively short active period, the group contributed this memorable track to maimai at a time when the series was transitioning through its PiNK-era content expansions. In Asian English-localized versions of the arcade cabinet, the song is displayed as HIMITSU SPARK and the artist as A crow is white. HIMITSUスパーク is notable among PiNK-era holdovers: it is the last remaining POPS&ANIME song from maimai PiNK's default songlist that has never been removed from the arcade release, surviving multiple version transitions and level revisions. Its MASTER chart (designed by Jack) sits at level 13 with a constant of 13.2, while the EXPERT chart (designed by Techno Kitchen) holds at level 10. Both charts have seen their difficulty ratings adjusted across subsequent maimai DX updates, reflecting the game's evolving difficulty calibration standards.