t+pazolite, a defining producer in the Japanese hardcore and doujin music scene, contributed ヒミツCULT (Himitsu CULT) to maimai DX during the Splash PLUS era as part of the HARDCORE TANO*C collaboration event. The track originally appeared on his 2020 EP NGHTSHFT and is purely instrumental, no vocals, no lyrics, built around a relentless 190 BPM hardcore foundation. True to t+pazolite's style, the track alternates between aggressive kick-and-synth assaults and filtered breakdowns, creating the tension-and-release dynamic familiar to fans of the J-core and breakcore scenes. The title combines the Japanese word "himitsu" (秘密, secret) with "CULT," evoking an underground, almost conspiratorial atmosphere that mirrors the track's industrial-tinged sound design. In maimai DX, ヒミツCULT launched as an event-exclusive unlock within the HARDCORE TANO*C Area, requiring players to accumulate 60 km of in-game distance during a limited window (May 14 to July 8, 2021 for the Japanese version). It was later folded into the default song pool starting with maimai DX UNiVERSE. Beyond the game, t+pazolite used ヒミツCULT as the demonstration track in his own three-part DTM (Desk Top Music) production tutorial series on YouTube, giving aspiring producers an uncommon look at his creative workflow. The MASTER chart, designed by サファ太 (Safata), sits at level 13+ with a difficulty constant of 13.7, demanding precise timing and stamina through its dense note patterns at a steady 190 BPM. The EXPERT chart was crafted by 隅田川星人 (Sumidagawa Seijin).