Overview
熱異常 (Netsu Ijou, officially subtitled "Heat Abnormal") is a Vocaloid-style original song by Japanese producer Iyowa (いよわ), featuring vocals by Rei Adachi (足立レイ). Iyowa, known for popular Vocaloid works such as きゅうくらりん (Kyu-kurarin), wrote the composition, arrangement, lyrics, and produced the accompanying music video as a complete self-contained package. The track originally appeared on Iyowa's self-titled album 熱異常 released in 2022 before making its rhythm-game debut.
The song joined maimai DX BUDDiES at its September 2023 launch in the niconico & VOCALOID genre, bringing with it five DX-format charts. Its Re:Master difficulty, released on the same day, ranks among the more demanding offerings of the BUDDiES era at Level 13+ with a 13.9 difficulty constant and nearly 1,000 notes. The Master chart, originally positioned at Level 11+ at launch, was elevated to Level 12 in a post-release revision starting from BUDDiES PLUS, reflecting the chart's true technical demands. The song later crossed over into CHUNITHM LUMINOUS PLUS in July 2024, expanding its reach beyond the maimai arcade ecosystem.
Videos
Charts
DX
BASIC
4(4)
186 notesDesigner: -|Tap 129Hold 13Slide 6Touch 32Break 6
ADVANCED
7+(7.6)
360 notesDesigner: -|Tap 310Hold 27Slide 6Touch 13Break 4
EXPERT
10(10)
538 notesDesigner: サファ太|Tap 413Hold 53Slide 7Touch 14Break 51
MASTER
12(12.1)
703 notesDesigner: 緑風 犬三郎|Tap 441Hold 125Slide 74Touch 40Break 23
Re:MASTER
13+(13.9)
996 notesDesigner: はっぴー|Tap 693Hold 19Slide 137Touch 113Break 34
Trivia
- The song's title 熱異常 literally translates to 'heat abnormality' or 'fever anomaly,' evoking themes of psychological distress and systemic collapse explored in the lyrics.
- Iyowa handled every aspect of the song's production, composition, arrangement, lyrics, and the music video, making it a fully self-directed work.
- Vocals for 熱異常 were performed by Rei Adachi (足立レイ), a frequent collaborator with Iyowa on Vocaloid-style original songs.
- The Master chart was initially released at Level 11+ in maimai DX BUDDiES but was re-evaluated upward to Level 12 starting from the BUDDiES PLUS update, a rare post-release difficulty revision.
- The Re:Master chart, designed by はっぴー (Happy), features 996 total notes with an unusually high count of Slide (137) and Touch (113) notes, making it a stamina-intensive full-board workout at 183 BPM.
- The Expert chart, designed by サファ太 (Safata), contains 51 Break notes, a notably high number for a Level 10 chart, adding significant scoring variance.
- The Master chart was designed by 緑風 犬三郎 (Ryokufuu Inuzaburō), an alias that community sources associate with the same charter behind the Re:Master, はっぴー.
- 熱異常 was added to CHUNITHM LUMINOUS PLUS on July 4, 2024, with its Master chart reaching Level 14, making it one of the harder crossover additions in that version.
- In the Chinese version of maimai (舞萌DX), the song arrived later on December 4, 2024 as part of the 舞萌DX 2024 update.
FAQ
- Who composed 熱異常 (Heat Abnormal) for maimai?
- 熱異常 was composed, arranged, and written by Japanese Vocaloid producer Iyowa (いよわ), who also produced the music video. The vocals were performed by Rei Adachi (足立レイ).
- What version of maimai introduced 熱異常?
- 熱異常 was added to maimai DX BUDDiES at launch on September 14, 2023, as part of the niconico & VOCALOID genre. Its Re:Master chart was available from the same day.
- What are the difficulty levels of 熱異常 in maimai?
- The DX charts span Basic 4, Advanced 7+, Expert 10, Master 12, and Re:Master 13+ (difficulty constant 13.9). The Master chart was initially Level 11+ and was later revised up to Level 12 starting from BUDDiES PLUS.
- Who designed the charts for 熱異常 in maimai?
- The Expert chart was designed by サファ太 (Safata), the Master chart by 緑風 犬三郎 (Ryokufuu Inuzaburō), and the Re:Master chart by はっぴー (Happy).
- Does 熱異常 appear in any other rhythm games?
- Yes, 熱異常 was added to CHUNITHM LUMINOUS PLUS on July 4, 2024, with charts reaching up to Level 14 Master difficulty.
- What is the BPM of 熱異常?
- The song has a BPM of 183, maintaining a consistent tempo throughout.
- What is the meaning of the song title 熱異常?
- 熱異常 (Netsu Ijou) translates to 'heat abnormality' or 'fever anomaly,' and the lyrics explore themes of repeating cycles, psychological anguish, and a sense of impending doom, reflected in the song's intense, driving production.
- Was the Master chart of 熱異常 always Level 12?
- No. The Master chart was originally released at Level 11+ in BUDDiES. It was later re-evaluated and raised to Level 12 from the BUDDiES PLUS update onward.
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