Axeria is a high-energy instrumental track composed by the doujin circle unit AcuticNotes, comprising composer An-fillnote (An) and visual designer レク (Reku). It was introduced to maimai during the ORANGE PLUS era as part of the "3 month BOSS RUSH" campaign at SEGA's JOYPOLIS indoor theme park arcades, the third and final installment in that monthly new-song series. The track is defined by its relentless 193 BPM tempo, driving synth leads, and an anthemic, cinematic quality that carries a boss-track aura. In the maimai context, Axeria carries significant weight: its Master chart (level 14, difficulty constant 14.5, designed by Jack) is densely packed with 16th-note tap clusters in [5.5.3] and [5.5.4] patterns during the chorus key change, interwoven with demanding slide sequences that have challenged advanced players since the song's debut. The Expert chart (level 12+, designed by mai-Star) likewise presents a substantial step up in complexity. Originally locked behind a steep 1000 music ticket requirement exclusive to JOYPOLIS arcades, a barrier matched only by Caliburne in that era, Axeria became unconditionally available to all players from maimai PiNK onward. The song has no vocals or lyrics, letting the composition and chart design speak for themselves.