Overview
病み垢ステロイド (Yami Aka Steroid) is a VOCALOID track by prolific producer かいりきベア (Kairiki Bear), featuring 初音ミク (Hatsune Miku) on vocals. The title is a layered internet-culture pun: 病み (yami, "sick" or "illness") combined with 垢 (aka, internet slang for "account") and ステロイド (steroid), evoking the idea of a compulsive, addictive online persona corroded by negativity. The song's lyrics paint a visceral picture of mental distress, social isolation, and the performative pain of posting one's misery to an indifferent timeline, punctuated by the nonsensical, almost glitched-out refrain "しゅぴぱーりーぱ."
Released as part of a self-titled album in 2024, the song was added to maimai でらっくす PRiSM on September 12, 2024, at launch across Japanese, international, and Chinese arcade regions. Its fast 203 BPM and aggressive vocal delivery carry into the chart design: the Expert chart (designed by サファ太) features 106 Break notes out of 627 total, an unusually high density that rewards precision reading, while the Master chart (designed by はっぴー) pushes the total to 911 notes with heavy Slide and Touch clusters that mirror the track's manic energy.
Videos
Charts
DX
BASIC
5(5)
250 notesDesigner: -|Tap 199Hold 18Slide 6Touch 22Break 5
ADVANCED
7+(7.6)
364 notesDesigner: -|Tap 293Hold 35Slide 8Touch 26Break 2
EXPERT
11(11)
627 notesDesigner: サファ太|Tap 409Hold 70Slide 19Touch 23Break 106
MASTER
13+(13.8)
911 notesDesigner: はっぴー|Tap 458Hold 79Slide 171Touch 168Break 35
Trivia
- The song was produced, composed, arranged, and written entirely by Kairiki Bear, a VOCALOID producer known for dark, high-energy tracks such as 'Darling Dance' and 'Shoujo Rei.'
- The music video was created by illustrator and animator のう (Nō), whose distinctive art style complements the song's gloomy internet-aesthetic themes.
- 病み垢ステロイド was added to all four maimai regions (Japan, International, USA, China) at the launch of maimai でらっくす PRiSM, making it widely accessible from day one.
- The Chinese version of maimai (舞萌DX) received the song later, it was added to 舞萌DX 2025 on January 23, 2026.
- The Master chart (level 13+ / constant 13.8) has 911 total notes, with 171 Slide notes and 168 Touch notes, an unusually balanced split between the two DX-exclusive note types that demands coordinated two-hand sliding and palm tapping.
- The Expert chart's 106 Break notes, roughly 17% of its total note count, make it one of the more Break-heavy charts at its level, requiring precise timing for maximum score.
- The song's lyrics include repeated references to 'medicine' (おくすり), framing the narrator's emotional spiral as a self-medicating cycle, and the Japanese word 炎症 (''akami'' but read as ''akai'' meaning ''red/inflamed'') is used as a homophone pun on redness and inflammation.
- Kairiki Bear's song length is 2:27, compact for its tempo, packing dense lyrical phrases and a frantic chorus into under two and a half minutes.
FAQ
- Who composed 病み垢ステロイド (Yami Aka Steroid)?
- The song was composed, arranged, and written by かいりきベア (Kairiki Bear), a well-known VOCALOID producer. The vocals are provided by Hatsune Miku.
- When was 病み垢ステロイド added to maimai?
- It was added to maimai でらっくす PRiSM on September 12, 2024, as part of the version's launch lineup. It is available in all regions including Japan, International, USA, and China.
- What difficulty level is the Master chart for 病み垢ステロイド?
- The Master chart is rated level 13+ with a difficulty constant of 13.8. It was designed by はっぴー (Happy) and contains 911 total notes.
- Who designed the Expert and Master charts for 病み垢ステロイド in maimai?
- The Expert chart (level 11) was designed by サファ太 (Safata), and the Master chart (level 13+) was designed by はっぴー (Happy).
- What does the title 病み垢ステロイド mean?
- The title is a compound internet-culture pun. 病み (yami) means sickness or illness, 垢 (aka) is internet slang for an online account, and ステロイド (suteroido) means steroid. Together it suggests a 'sick account steroid', an addictive, compulsive online persona fueled by negativity and performative distress.
- Does 病み垢ステロイド have an official music video?
- Yes, the official music video was created by the artist のう (Nō) and is available on YouTube. It features Hatsune Miku singing the song with bleak, stylized visuals matching the track's dark internet-aesthetic themes.
- What genre is 病み垢ステロイド in maimai?
- In maimai, the song is categorized under niconico & VOCALOID (niconico＆ボーカロイド), reflecting its origin as a VOCALOID track popular on the niconico video platform.
