IMBRUED:FLUX is a maimai original song composed by qfeileadh (the alias of Tokiru Iwata) with vocals by のあ (Noa), released for maimai DX PRiSM PLUS on July 11, 2025. It was initially gated behind progression in 7sRef Area 4, requiring players to accumulate 250 km of distance before it became available by default from the CiRCLE PLUS version onward. The track is rooted in the lore of the 7sRef world, where the game's in-game flavor text describes a scene at the central crystalline tower. A wandering figure in a light blue dress and a mysterious girl in black holding a dark pendant trigger a reality-glitching event, black geometric patterns overwrite the landscape, and the protagonist finds themselves face to face with their own doppelgänger. This narrative of identity dissolution and digital corruption is reflected directly in the song's lyrics, which open with computer-system alert messages ("問題ガ起キマシタ", "A problem has occurred"; "障害ガ起キマシタ", "An obstacle has occurred") before weaving through themes of emotion, color, and a desire to return to formlessness. Musically, IMBRUED:FLUX drives forward at 176 BPM with qfeileadh's characteristic electronic production, pairing tight synthetic instrumentation with のあ's clean vocal delivery. The music video was produced by SHIG and とあざ, reinforcing the glitch and mirror motifs that run throughout the piece. On the charting side, the MASTER difficulty was co-designed by きょむりん and Luxizhel, while the EXPERT chart was handled by サファ太, each putting their own stamp on the track's high-note-count arrangements.