Nemesis

"Nemesis" holds the distinction of being the first original song M2U contributed to Pump It Up, debuting in Pump It Up 2015 PRIME at 160 BPM. It should not be confused with the same-titled track from the BEMANI series, which is an entirely separate piece. Within the PIU family of games it also appears in Chrono Circle.

The BGA, created by Adzuki and L.Ferdinant, carries a strong Japanese subculture vibe. Against the broader Prime aesthetic, whose 2D output leaned toward a darker, almost apocalyptic mood, this video stood out and was warmly received by the community.

The song's defining trait is the run. Aside from a brief breather after the middle section, nearly the whole chart is built from dense bursts, including a speed-changing run passage reminiscent of Passacaglia. S18 and D20 pack an unusually high run density for their level, making them genuine stamina drains. Among the lighter charts, S4 is a plain four-beat pattern, S7 plays like a friendlier take on SHK's Follow me, and S10 is built on dotted rhythms (it sat at level 11 until being lowered in XX). S16 works as a softer version of S18. On the Double side, D12 serves as a Half-Double introductory chart, while D20 spreads out S18 but turns what was a freeze section in single into a straight run. The two-player Co-Op, charted by KAZEMURA, sits at upper-mid difficulty and is defined by a stretch with a 1P vanish plus 2P appear gimmick. A MASTER pattern was ported in the June 30, 2022 update.