鬼女紅妖 is a maimai original song by composer Earliri, first appearing in maimai でらっくす CiRCLE as part of the Takamagahara Area 2 (高天原ちほー2) unlockable track set. The song draws its title and narrative from a Japanese folk tale-inspired story about a woman who, having lost her child amid the devastation of war, is visited by the black fox Kurotsune (クロツネ). The fox offers her a demon mask (面) forged from her own grief and resentment, transforming her body, horns sprouting, a twisted mask of hatred affixing itself to her face, into a full-fledged oni (鬼女). The flavor text woven into the song's in-game description paints a vivid scene of a village plagued by a demon damming the water supply, and the party of travelers (Nigi and company) who investigate, only to find the mountain shrouded in freezing miasma. Musically, Earliri delivers a driving, high-energy composition at 165 BPM that matches the narrative's intensity, blending traditional Japanese melodic motifs with modern electronic production. The background movie was created by CloA, とびはち, and 壷也, adding visual depth to the song's dark mythos. The Master chart, designed by サファ太 (Safata), is notable for its dense note density at level 14 (constant 14.1) with 103 Break notes, a high Break count that demands precise timing from advanced players. The Expert chart, designed by Luxizhel (level 11+, constant 11.6), offers a substantial challenge for intermediate players progressing through the area's unlock ladder.