Overview
ウルトラトレーラー (Ultra Trailer) is an original Kasane Teto song by Japanese producer Masarada, first released as a digital album track in 2023 before arriving in maimai DX PRiSM on December 6, 2024. True to its cinematic title, the track opens with a burst of self-deprecating frustration, "Uwa, saiaku, mou dame da", before escalating into a chaotic, defiant chorus that Masarada matched with a music video he produced entirely on his own, handling every aspect of its creation. The song's driving 155 BPM rhythm and emotionally volatile lyrics, which swing between despair and exhilaration, fit naturally within the niconico & VOCALOID genre and the broader vocaloid-doujin ecosystem. In maimai, the EXPERT chart was crafted by サファ太 (Safata) and the MASTER chart (level 13+, constant 13.8) by はっぴー (Happy), the latter packing 1,027 notes with a notably heavy emphasis on Slide and Touch patterning. Outside maimai, ウルトラトレーラー also appears in Sega's CHUNITHM X-VERSE-X, extending its reach across both of the company's flagship arcade rhythm game lines.
Videos
Charts
DX
BASIC
4(4)
241 notesDesigner: -|Tap 212Hold 13Slide 4Touch 7Break 5
ADVANCED
7(7)
408 notesDesigner: -|Tap 368Hold 14Slide 8Touch 15Break 3
EXPERT
11(11)
636 notesDesigner: サファ太|Tap 387Hold 65Slide 42Touch 56Break 86
MASTER
13+(13.8)
1027 notesDesigner: はっぴー|Tap 676Hold 18Slide 140Touch 113Break 80
Trivia
- Masarada single-handedly produced the music video for ウルトラトレーラー, handling every aspect of its creation, the Japanese wiki highlights the climactic final chorus run and its accompanying visuals as a must-see.
- The song was first released as a digital album track in 2023, roughly a year before its maimai debut.
- ウルトラトレーラー was later added to CHUNITHM X-VERSE-X on April 1st, 2026, making it one of the songs shared between Sega's two arcade rhythm game series.
- Regional maimai release dates varied: Japan on December 6, 2024 (PRiSM); Asian regions on May 9, 2025; and the Chinese version (舞萌DX 2025) on March 25, 2026.
- The MASTER chart, designed by はっぴー (Happy), contains 1,027 total notes, including 140 Slide notes and 113 Touch notes, creating a physically demanding play experience relative to its 13.8 difficulty constant.
- The EXPERT chart (level 11) features 86 Break notes, a relatively high count for its difficulty tier, and was designed by サファ太 (Safata).
- The song runs 2 minutes and 46 seconds in length.
FAQ
- Who composed ウルトラトレーラー?
- ウルトラトレーラー was composed, arranged, and written by Masarada (マサラダ), a Japanese music producer who also created the song's music video entirely on his own.
- Who sings ウルトラトレーラー?
- The song features Kasane Teto (重音テト), a popular vocaloid voicebank known for appearances in both original doujin works and commercial rhythm games.
- When was ウルトラトレーラー added to maimai?
- It was added to maimai DX PRiSM on December 6, 2024 in Japan. Asian regions received it on May 9, 2025, and the Chinese version followed on March 25, 2026.
- What difficulty is the MASTER chart of ウルトラトレーラー?
- The MASTER chart is level 13+ with a difficulty constant of 13.8. It contains 1,027 notes and was designed by はっぴー (Happy).
- Who designed the ウルトラトレーラー charts in maimai?
- The EXPERT chart was designed by サファ太 (Safata), and the MASTER chart was designed by はっぴー (Happy). The Basic and Advanced charts do not have credited designers.
- Does ウルトラトレーラー appear in other rhythm games?
- Yes, the song was also added to Sega's CHUNITHM X-VERSE-X on April 1st, 2026, making it playable across both of the company's major arcade rhythm game franchises.
- What BPM is ウルトラトレーラー?
- The song runs at 155 BPM throughout.
- What are the lyrics of ウルトラトレーラー about?
- Written by Masarada, the lyrics chart a volatile emotional arc, opening with self-lacerating frustration, building through themes of chaos and rebellion against normality, and culminating in a defiant forward march into the unknown. The title 'Ultra Trailer' evokes the cinematic, buildup-driven structure of the track itself.
