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Overview

Regulus is an original maimai composition by the circle お月さま交響曲 (Otsukisama Koukyoukyoku, "Moon Symphony"), with composition and arrangement by 342, lyrics by Minase Omiya, and dual vocals by alico and NishikazeS. The music video was created by HDLV (Kodai Endo), a frequent visual contributor to maimai original tracks. It debuted in maimai DX Splash as the climactic Perfect Challenge reward for Heaven Area 3 (天界ちほー3), requiring 1260 km of travel distance before it could be played. Running at a driving 212 BPM, the track opens with passages in 5/4 time, giving it an irregular, processional feel that community commentary compares to other maimai originals with unconventional meters such as ガラテアの螺旋 and Prophesy One. Its lyrics are written entirely in a constructed language rather than Japanese or English, lending an ancient, ceremonial atmosphere that complements the game's Heaven Area lore, a narrative about the angel Mika whose prayers ended a war between angels and demons. On the gameplay side, Regulus carries a MASTER chart designed by 7.3GHz with a level of 14+ (constant 14.7) and a precisely notated total of 999 notes. The EXPERT chart was designed by 隅田川星人 (Sumidagawa Seijin). Originally locked behind the Perfect Challenge system, Regulus became available by default starting with maimai DX UNiVERSE. The song also appears in ONGEKI bright MEMORY and CHUNITHM SUN PLUS, extending its reach across Sega's rhythm game lineup.

Videos

Official PV

Open

Master chart

Open

Expert chart

Open

Charts

DX

BASIC
5(5)
180 notesDesigner: -|Tap 126Hold 22Slide 6Touch 19Break 7
ADVANCED
8(8)
425 notesDesigner: -|Tap 346Hold 13Slide 37Touch 17Break 12
EXPERT
12(12.5)
628 notesDesigner: 隅田川星人|Tap 492Hold 43Slide 39Touch 45Break 9
MASTER
14+(14.7)
999 notesDesigner: 7.3GHz|Tap 764Hold 28Slide 99Touch 99Break 9

Trivia

  • The lyrics of Regulus are written entirely in a constructed (fictional) language, displayed in-game as a block of opaque, romance-sounding text, a distinctive trait among maimai original songs.
  • The prelude uses 5/4 time signature, an irregular meter that Japanese community commentary notes is shared with other maimai originals such as ガラテアの螺旋 (Galatea no Rasen) and Prophesy One.
  • The MASTER chart totals exactly 999 notes, a distinctive count among level 14+ charts in maimai DX Splash.
  • Regulus was originally locked behind the Perfect Challenge system in Heaven Area 3 (天界ちほー3), requiring players to accumulate 1260 km of distance before it could be attempted. It became available by default from maimai DX UNiVERSE onward.
  • The Basic difficulty was initially set at level 6 during Splash through UNiVERSE, but was lowered to level 5 starting with maimai DX UNiVERSE+.
  • Beyond maimai, Regulus appears in ONGEKI bright MEMORY (added as a May 2023 Monthly Mission reward) and CHUNITHM SUN PLUS (via National Matching and later the Item Exchange).
  • The song's in-game flavor text tells the lore of the angel Mika, whose prayers shielded heaven and ended the war between angels and demons, leading to the founding of churches and knight academies, the narrative backdrop of Heaven Area 3.
  • Regulus was composed by 342 (composition and arrangement), with lyrics by Minase Omiya and vocals by alico and NishikazeS, all working under the circle name お月さま交響曲.
  • The circle name お月さま交響曲 translates roughly to 'Moon Symphony,' but the individual credits suggest it is a collaborative unit rather than a single artist.

FAQ

Who composed Regulus for maimai?
Regulus was composed and arranged by 342, with lyrics by Minase Omiya and vocals by alico and NishikazeS, all credited under the circle name お月さま交響曲 (Otsukisama Koukyoukyoku).
What version of maimai did Regulus debut in?
Regulus debuted in maimai DX Splash as a Perfect Challenge reward track for Heaven Area 3. It became available by default starting with maimai DX UNiVERSE.
How do you unlock Regulus in maimai?
Originally, Regulus required clearing a Perfect Challenge after accumulating 1260 km in Heaven Area 3 during maimai DX Splash. From maimai DX UNiVERSE onward, it is available by default in all regions.
What BPM is Regulus?
Regulus runs at 212 BPM and features irregular 5/4 time signature passages in its prelude.
What level is Regulus on Master in maimai?
The MASTER chart is level 14+ with a difficulty constant of 14.7, designed by 7.3GHz. It contains a total of 999 notes.
Who designed the charts for Regulus?
The EXPERT chart was designed by 隅田川星人 (Sumidagawa Seijin), and the MASTER chart was designed by 7.3GHz.
Does Regulus appear in other rhythm games?
Yes, Regulus appears in ONGEKI bright MEMORY (added as a May 2023 Monthly Mission reward) and CHUNITHM SUN PLUS (added via National Matching and later the Item Exchange).
Are the lyrics of Regulus in a real language?
No, the lyrics are written in a constructed (fictional) language. The in-game display shows lines such as 'Iris firatia' and 'Livella gratilio,' which do not correspond to any natural language.

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