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Overview
ラビットホール (Rabbit Hole) is a Vocaloid pop-rock track by DECO*27 featuring Hatsune Miku, originally released as a single in 2023 before being included in the artist's ninth studio album TRANSFORM. The song arrived in maimai DX as part of the BUDDiES PLUS update on March 21, 2024, available simultaneously across Japanese, international, US, and Chinese regions. Its production credits include arrangement by tepe, bass performance by Shouta Horie, and a music video created by the visual team OTOIRO. The lyrics weave a sardonic, emotionally candid narrative about jealousy, self-deprecation, and the messy contradictions of love, characteristic of DECO*27's sharp, conversational writing style. In the maimai ecosystem, the track is notable for its Re:MASTER chart co-designed by Luxizhel & Jack, rated at level 13 with a constant of 13.3 and 922 total notes, making it a formidable late-game challenge. The song also appears in sister rhythm games CHUNITHM VERSE and ONGEKI Re:Fresh, cementing its status as one of DECO*27's cross-format Vocaloid hits. A notable milestone: ラビットホール became DECO*27's 39th song to surpass one million plays, a coincidence the artist remarked was not intentional despite the number matching his age at the time.
Videos
Charts
DX
BASIC
3(3)
199 notesDesigner: -|Tap 164Hold 18Slide 8Touch 8Break 1
ADVANCED
7(7)
334 notesDesigner: -|Tap 223Hold 60Slide 12Touch 27Break 12
EXPERT
9+(9.6)
554 notesDesigner: サファ太|Tap 401Hold 64Slide 44Touch 29Break 16
MASTER
11+(11.8)
713 notesDesigner: 緑風 犬三郎|Tap 452Hold 73Slide 129Touch 38Break 21
Re:MASTER
13(13.3)
922 notesDesigner: Luxizhel & Jack|Tap 662Hold 49Slide 158Touch 28Break 25
Trivia
- ラビットホール was DECO*27's 39th song to reach the one-million-plays milestone. The artist noted in an interview that hitting this number on his 39th track was a coincidence, not deliberate.
- The album TRANSFORM includes a "Reloaded ver." of the song featuring newly retuned Hatsune Miku vocals, offering a subtly different vocal performance from the original single release.
- The song's maimai chart designers span multiple notable creators: サファ太 (Safata) handled the Expert chart, 緑風 犬三郎 (Happy) designed the Master chart, and the duo Luxizhel & Jack co-designed the Re:Master chart.
- An UTAGE (宴) chart titled 音 (Oto) with a level rating of 13+? was added to maimai DX on September 18, 2025, featuring 1,195 total notes, the highest note count of any chart for this song.
- The in-game collection titles reference the song's lyrics: "誰でもいいじゃん" (Anyone's fine, right?) is unlocked by playing with 2+ players, and "埋まればいいじゃん" (As long as it's filled, right?) requires FULL SYNC DX.
- Outside of maimai, the song also appears in CHUNITHM VERSE (added April 2025) and ONGEKI Re:Fresh (added March 2026), with dedicated charts in each game.
- The arrangement was handled by tepe, a producer who has collaborated with DECO*27 on multiple Vocaloid tracks, contributing to the song's polished pop-rock sound.
- Music video production was handled by OTOIRO, a visual team known for creating dynamic, narrative-driven animations for DECO*27's Vocaloid releases.
FAQ
- Who composed and arranged ラビットホール (Rabbit Hole)?
- The song was composed and written by DECO*27 (Kosuke Terayama), with arrangement by tepe and bass performed by Shouta Horie. Vocals are provided by Hatsune Miku.
- When was ラビットホール added to maimai DX?
- It was added on March 21, 2024, as part of the maimai DX BUDDiES PLUS update, and the Re:MASTER chart was released on the same day.
- What difficulty levels do the ラビットホール charts have in maimai?
- The DX charts span Basic 3, Advanced 7, Expert 9+ (constant 9.6), Master 11+ (constant 11.8), and Re:Master 13 (constant 13.3). An UTAGE chart rated 13+? was added later.
- Who designed the charts for ラビットホール in maimai?
- The Expert chart was designed by サファ太, the Master chart by 緑風 犬三郎, and the Re:Master chart jointly by Luxizhel & Jack.
- What album is ラビットホール from?
- The song originally appeared as a single in 2023 and was later included on DECO*27's ninth studio album TRANSFORM, which also features a "Reloaded ver." with retuned Hatsune Miku vocals.
- Does ラビットホール appear in other rhythm games?
- Yes, it also appears in CHUNITHM VERSE (added April 2025) and ONGEKI Re:Fresh (added March 2026), with dedicated charts in each game.
- What is the meaning or lyrical theme of ラビットホール?
- The lyrics explore themes of jealousy, emotional vulnerability, and the contradictions of love, delivered with DECO*27's characteristic sardonic and conversational style. The chorus poses rhetorical questions about filling emotional voids and maintaining a "pure" facade.
