Overview
空回りライブラリ (Karamawari Library) is a vocaloid-genre J-pop track by Japanese musician 雪乃イト (Ito Yukino), with vocals performed by 夏色花梨 (Karin Natsuki). The song first appeared as a self-titled album single in 2022 before joining the maimai DX lineup with the PRiSM PLUS update on August 8, 2025. The title itself is a compelling blend of Japanese and English: 空回り (karamawari, meaning "spinning one's wheels" or "futile effort") paired with ライブラリ (library), evoking themes of overthinking and unspoken emotion that run throughout the lyrics. Composed, arranged, and written entirely by Ito Yukino, the song moves at a steady 130 BPM with a mid-tempo pop sensibility, pairing introspective verses about hesitation in love and the desire for authentic connection with a crisp, melodic chorus. The music video was produced by artists かじ and Haる. In maimai, the song's Master chart, designed by はっぴー at a demanding 12+ difficulty (constant 12.8), is the standout challenge, while the Expert chart by Luxizhel offers a 9+ (9.6) gauge of the song's rhythmic character. The song is available across all maimai DX regions (Japan, international, and North America) from its initial release.
Videos
Charts
DX
BASIC
3(3)
180 notesDesigner: -|Tap 152Hold 9Slide 4Touch 9Break 6
ADVANCED
6(6)
302 notesDesigner: -|Tap 267Hold 16Slide 4Touch 11Break 4
EXPERT
9+(9.6)
418 notesDesigner: Luxizhel|Tap 297Hold 32Slide 37Touch 13Break 39
MASTER
12+(12.8)
667 notesDesigner: はっぴー|Tap 484Hold 55Slide 87Touch 17Break 24
Trivia
- 空回りライブラリ was added to maimai でらっくす PRiSM PLUS on August 8, 2025 as part of the version's second major content update. In the Asian version of maimai DX, the song followed on December 26, 2025.
- The song originally released as a single/album of the same name in 2022 by 雪乃イト (Ito Yukino), predating its maimai debut by roughly three years.
- Composition, arrangement, and lyrics were all handled by Ito Yukino, while vocals were provided by guest singer 夏色花梨 (Karin Natsuki).
- The music video and jacket artwork were created by the visual artist duo かじ and Haる.
- The Master difficulty chart (level 12+, constant 12.8) was designed by はっぴー, a notes designer active across the PRiSM era known for technically demanding DX chart layouts.
- The Expert chart (level 9+, constant 9.6) was designed by Luxizhel, whose charting work appears on multiple PRiSM PLUS and later-era songs.
- The song's title plays on the double meaning of 空回り (karamawari), literally 'idle rotation', as a metaphor for fruitless effort and anxious overthinking, a theme reinforced in the lyrics' depiction of stalled romantic communication.
FAQ
- Who composed 空回りライブラリ?
- The song was composed, arranged, and written by 雪乃イト (Ito Yukino).
- Who sings 空回りライブラリ?
- The vocals are performed by 夏色花梨 (Karin Natsuki), while 雪乃イト (Ito Yukino) handled composition, arrangement, and lyrics.
- When was 空回りライブラリ added to maimai?
- The song was added to maimai でらっくす PRiSM PLUS on August 8, 2025 in Japan and international regions. The Asian version received it on December 26, 2025.
- What does the title 空回りライブラリ mean?
- 空回り (karamawari) means 'spinning one's wheels' or 'futile effort,' combined with ライブラリ (library). The title evokes a theme of unproductive overthinking and unspoken feelings, which matches the introspective love lyrics of the song.
- What difficulty level is the Master chart for 空回りライブラリ?
- The Master chart is rated level 12+ with a difficulty constant of 12.8, designed by はっぴー. The Expert chart is level 9+ (constant 9.6) designed by Luxizhel.
- What genre is 空回りライブラリ in maimai?
- The song is categorized under niconico & VOCALOID (niconico＆ボーカロイド) in maimai DX.
