Komplexe is a maimai original track produced by Yunosuke (雄之助) with vocals by Sennzai, introduced to the series during the maimai DX Splash era on October 16, 2020. The title adopts the German spelling of "complex," a small linguistic flourish that matches the song's layered, EDM-driven production style. Yunosuke, known in the Vocaloid and doujin scene for tracks such as Pathos and PaⅢ.SENSATION, brings his signature blend of heavy synthwork and electronic soundscapes. Sennzai, who had previously contributed vocals to the maimai original 花と、雪と、ドラムンベース。, delivers a moody, controlled performance that weaves through the track's shifting textures. Within maimai, Komplexe served as a milestone unlock in Metropolis Area 3 (メトロポリスちほー3), originally requiring players to reach 210 km of cumulative distance before becoming playable, a restriction lifted in later versions starting with maimai DX UNiVERSE. The song's flavor text describes a blackout in the neon-lit Metropolis region, with white robotic figures projected across the darkened sky, imagery reflected in the jacket art and MV produced by Gunjou licorice (群青リコリス). The song later crossed over into CHUNITHM NEW PLUS and the mobile rhythm game Phigros, extending its reach beyond the maimai arcade ecosystem. On the charting side, the MASTER difficulty (level 13+, constant 13.7) was designed by Shichimi Hertz (シチミヘルツ), while the EXPERT chart (level 11) was handled by Kanon Oguni (華火職人), each bringing distinct pattern philosophies to a track that rewards precision over stamina.