Overview
表裏一体 (Hyouri Ittai) is a Vocaloid-original track by the producer すりぃ (Suriii), released on his 2019 album パラドックス (Paradox) before joining the maimai DX lineup. The title is a Japanese four-character idiom (yojijukugo) meaning "two sides of the same coin", a state where opposing elements form an inseparable unity. This duality runs through the entire song: the instrumentation pairs bright synth leads with a grounding bass line (performed by shoujanai), while the lyrics place Kagamine Rin and Len's voices in dialogue with questions of identity, inner conflict, and the gap between performed happiness and genuine emotion. The music video, created by the artist duo まめでん/真ひろ, complements the theme with a stark visual style. In maimai, the song arrived as part of the でらっくす PLUS update on July 17, 2020, and its Master chart, designed by はっぴー (Happy) at level 12+, stands out for its heavy use of Touch notes woven into dense Tap patterns, reflecting the song's layered, push-and-pull character. The Expert chart, designed by サファ太 (Safata), offers a 9+ alternative that introduces the song's rhythmic flow at a lower ceiling.
Videos
Charts
DX
BASIC
3(3)
188 notesDesigner: -|Tap 154Hold 11Slide 2Touch 18Break 3
ADVANCED
6(6)
323 notesDesigner: -|Tap 259Hold 30Slide 16Touch 4Break 14
EXPERT
9+(9.6)
530 notesDesigner: サファ太|Tap 364Hold 59Slide 30Touch 58Break 19
MASTER
12+(12.9)
896 notesDesigner: はっぴー|Tap 686Hold 55Slide 75Touch 71Break 9
Trivia
- The song was originally released on すりぃ's album パラドックス (Paradox) in 2019, over a year before its maimai debut.
- Both Kagamine Rin and Kagamine Len serve as vocalists, with bass performed by shoujanai.
- The music video was created by the artist duo まめでん/真ひろ.
- The title 表裏一体 is a Japanese yojijukugo (four-character idiom) meaning 'two sides of the same coin' or a state where opposites coexist inseparably.
- In the Asian version of maimai DX, the song was added on December 18, 2020, roughly five months after the Japanese release.
- The Chinese version received the song at the launch of 舞萌DX 2021.
- The Basic difficulty was originally level 4 when added in maimai でらっくす PLUS but was lowered to 3 starting from maimai でらっくす UNiVERSE PLUS.
- The Master chart (level 12+) contains 896 total notes, with 71 Touch notes, an unusually high touch count for its difficulty tier that demands coordinated multi-finger handling.
- The lyrics include the line '僕は一体なんだ？わからなくなってる' ('What am I, exactly? I'm losing track'), a direct play on the song's title theme of self-identity.
- The Expert chart was designed by サファ太 (Safata), while the Master chart was designed by はっぴー (Happy).
FAQ
- Who composed 表裏一体?
- The song was composed, arranged, and written by すりぃ (Suriii), a Vocaloid producer active in the niconico doujin music scene.
- What Vocaloid voices are used in 表裏一体?
- The song features both Kagamine Rin and Kagamine Len as vocalists, with live bass performed by shoujanai.
- When was 表裏一体 added to maimai?
- It was added in the maimai でらっくす PLUS update on July 17, 2020 in Japan. The Asian version followed on December 18, 2020, and the Chinese version launched with 舞萌DX 2021.
- What album is 表裏一体 from?
- The song originally appeared on Suriii's album パラドックス (Paradox), released in 2019.
- What does 表裏一体 mean?
- 表裏一体 (Hyouri Ittai) is a Japanese four-character idiom meaning 'two sides of the same coin', describing a state where two opposing elements are inseparable and form one whole.
- Who designed the charts for 表裏一体 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).
- What is notable about the Master chart for 表裏一体?
- The Master chart is level 12+ with 896 total notes, including 71 Touch notes, a notably high touch-note density that requires active multi-finger coordination throughout the chart.
