Search MaiDB

Search songs, versions, and categories.

All songs

Overview

Sirius (シリウス) is a song by Japanese pop-rock singer Eir Aoi, best known as the first opening theme for the 2013 anime series Kill la Kill (キルラキル). Composed by Ryousuke Shigenaga (重永亮介) with lyrics by meg rock, the track was released as Eir Aoi's third single in November 2013 and later included on her self-titled debut album. In the maimai rhythm game series, Sirius was added at the launch of maimai ORANGE PLUS on March 19, 2015, carrying the artist credit 藍井エイル「キルラキル」[アニメPV], a reference to the promotional anime PV version of the song. It originally appeared under the ANIME genre before being recategorized as POPS & ANIME from maimai PiNK onward. Due to music licensing restrictions, Sirius was never made available in non-Japanese versions of the game, making it a region-exclusive track limited to Japanese arcade cabinets. Its Standard chart set spans four difficulties, with the Expert and Master charts designed by Jack and rioN respectively, all set to a steady 176 BPM across a concise 1:28 runtime.

Videos

Master chart

Open

Charts

STD

BASIC
4(4)
126 notesDesigner: -|Tap 111Hold 6Slide 5Break 4
ADVANCED
6(6)
212 notesDesigner: -|Tap 175Hold 13Slide 18Break 6
EXPERT
8(8)
353 notesDesigner: Jack|Tap 298Hold 20Slide 26Break 9
MASTER
10(10)
403 notesDesigner: rioN|Tap 331Hold 18Slide 43Break 11

Trivia

  • Sirius was used as the first opening theme for the 2013 anime series Kill la Kill (キルラキル), produced by Trigger.
  • The song was composed by Ryousuke Shigenaga (重永亮介) and written by lyricist meg rock, marking one of Eir Aoi's early high-profile anime tie-ins.
  • Sirius was added to maimai ORANGE PLUS at the version's launch on March 19, 2015.
  • In non-Japanese Asian regions, the song was displayed with the localized English title Sirius and artist Aoi Eir "KILL la KILL", but was never actually made playable outside Japan due to licensing limitations.
  • The in-game genre for Sirius was originally ANIME in maimai ORANGE PLUS, then changed to POPS & ANIME starting from maimai PiNK, where it remained through all subsequent versions.
  • Eir Aoi's third single "Sirius" was released on November 13, 2013 and charted at number 8 on the Oricon Weekly Singles Chart.
  • Sirius had a translated English title and artist credit for Asian cabinets: "Sirius" and "Aoi Eir 'KILL la KILL'".
  • The Master chart (Level 10) was designed by rioN, while the Expert chart (Level 8) was designed by Jack, both well-known notes designers in the maimai scene.

FAQ

What anime is Sirius (シリウス) by Eir Aoi the opening for?
Sirius was used as the first opening theme for the 2013 anime series Kill la Kill (キルラキル), produced by Studio Trigger.
Which version of maimai added Sirius?
Sirius was added to maimai ORANGE PLUS at launch on March 19, 2015.
Who composed the song Sirius?
Sirius was composed by Ryousuke Shigenaga (重永亮介), with lyrics by meg rock, and performed by Eir Aoi.
Why is Sirius not available outside Japan in maimai?
Due to music licensing restrictions, Sirius was never included in non-Japanese versions of maimai. It remained exclusive to Japanese arcade cabinets throughout its history.
What is the BPM of Sirius in maimai?
Sirius has a constant BPM of 176 throughout its 1:28 in-game runtime.
Who designed the Master chart for Sirius?
The Master chart (Level 10) was designed by the notes designer rioN, and the Expert chart (Level 8) was designed by Jack.
Was Sirius available as a DX chart?
No, Sirius only received Standard charts (Basic, Advanced, Expert, Master) during its appearance in the maimai series. No DX-style chart was ever created for the song.