YURUSHITE, written as 許して in Japanese, meaning "please forgive me", is a high-speed instrumental track by t+pazolite (Tomoyuki Hamada) that crossed over from SEGA's ONGEKI into maimai でらっくす Splash as part of the ONGEKI & CHUNITHM collaboration genre. At a relentless 270 BPM, the song is a dense, frantic electronic barrage characteristic of t+pazolite's signature style: aggressive synth work, breakneck rhythms, and no vocals whatsoever. The song's unusual title has a documented real-world origin. In October 2018, t+pazolite posted something on Twitter that drew a response from KohaD, a key developer of CHUNITHM, who replied with "I won't forgive you" (許しませんよ). t+pazolite shot back with a simple plea: "YURUSHITE", and a running joke between composer and developer became the name of a track that would appear in all three SEGA arcade rhythm game families. Players, in turn, adopted the counter-refrain "とぱぞ許さない" (we won't forgive t+pazolite), keeping the gag alive in the community. In maimai, YURUSHITE arrived on December 25, 2020, with the Splash update. Its MASTER chart, designed by Takanashi-san (小鳥遊さん) at level 14 with a 14.4 constant, is a demanding endurance test of dense note streams at extreme speed, totaling 1,054 notes. The EXPERT chart by Shichimi Hertz (シチミヘルツ) sits at level 12. The jacket art features Aisaka Akane (逢坂 茜), the ONGEKI character who serves as the song's opponent in its home game. An extended "Uncut Edition" and a notably darker remix by LeaF appear on t+pazolite's album ハートエイク・デバッグ -Heartache Debug-. The MASTER chart was first publicly previewed during the maimai ALL PERFECT COLLECTiON RELEASE PARTY livestream alongside Climax, marking an early reveal of a Splash-era boss chart.