FLUFFY FLASH is a high-energy speedcore track by Kobaryo (the alias of Rei Furuba), a prolific composer in the Japanese rhythm-game and doujin music scene known for blistering tempos and frantic sound design. Clocking in at 252 BPM and running 2 minutes and 25 seconds, the song is entirely instrumental, a relentless barrage of rapid synth arpeggios, distorted bass stabs, and glitchy breakbeat fills that typify Kobaryo's signature style. The track originated in Sega's ONGEKI R.E.D. (December 2020) as part of the game's Chapter 4 event content, before migrating to maimai DX FESTiVAL PLUS on March 23, 2023, and later to CHUNITHM SUN. Its journey across all three Performai arcade franchises makes it a genuine cross-platform collaboration piece, emblematic of how Sega uses original commissioned tracks to unify its rhythm-game ecosystem. The song was also chosen as the final-round piece for the KING of Performai The 4th tournament in the CHUNITHM International division, underscoring its competitive pedigree. In maimai, FLUFFY FLASH is categorized under the ONGEKI & CHUNITHM genre. The MASTER chart (level 14, constant 14.4) was designed by Happy (はっぴー), while the EXPERT chart (level 12+, constant 12.8) was handled by Rocher@penguin (ロシェ＠ペンギン). The MASTER chart's dense 988-note layout, with 111 Slide and 104 Touch notes, demands both speed and spatial awareness across the full DX panel.