Overview
少女レイ (Shoujo Rei) is a Vocaloid song by Mikito-P (みきとP) featuring Hatsune Miku, added to maimai でらっくす PRiSM PLUS on August 22, 2025 as part of the niconico & VOCALOID genre. The track originally debuted in SEGA's CHUNITHM SUN in April 2023 before arriving in maimai over two years later.
The title's second word is written in katakana, レイ, inviting readings of rei as spirit or ghost (霊), a reading that aligns with the lyrics' story of obsessive friendship, summer tragedy, and spectral possession. Mikito-P has stated in interviews that the song's motif was drawn from the drama 人間・失格〜たとえばぼくが死んだら (Human Disqualification: If I Were to Die), whose title references Osamu Dazai's novel No Longer Human. The resulting track weaves a narrative of a toxic, possessive bond set against vivid summer imagery, cicadas, a railroad crossing, a torn matching keychain, told through the voice of Hatsune Miku.
少女レイ was Mikito-P's seventh Niconico upload to reach one million views, and it appears on the compilation CD EXIT TUNES PRESENTS Vocaloseasons feat. 初音ミク～Summer～ as well as his self-titled 2018 album 少女レイ. The music video was produced by illustrator and animator rei kato.
In maimai, the Expert chart was designed by 鳩ホルダー (Hato Holder) and the Master chart by Luxizhel. With a level constant of 12.9, the Master chart sits among the more demanding charts in the PRiSM PLUS lineup, featuring dense slide and break-note patterns characteristic of Luxizhel's design style.
Videos
Charts
DX
BASIC
2(2)
199 notesDesigner: -|Tap 163Hold 11Slide 4Touch 15Break 6
ADVANCED
6(6)
346 notesDesigner: -|Tap 296Hold 12Slide 7Touch 27Break 4
EXPERT
9+(9.6)
443 notesDesigner: 鳩ホルダー|Tap 324Hold 33Slide 62Touch 13Break 11
MASTER
12+(12.9)
622 notesDesigner: Luxizhel|Tap 417Hold 47Slide 104Touch 23Break 31
Trivia
- 少女レイ is Mikito-P's seventh Niconico song to surpass one million views, marking a milestone in his Vocaloid discography.
- Mikito-P has cited the drama 人間・失格〜たとえばぼくが死んだら (Human Disqualification: If I Were to Die) as the thematic inspiration for the song, discussing its influence in a 2019 interview with Real Sound.
- The song first appeared in a rhythm game via CHUNITHM SUN on April 13, 2023, predating its maimai debut by roughly two and a half years.
- The music video was created by rei kato, an illustrator and animator known for atmospheric, narrative-driven visuals.
- 少女レイ was included on the compilation CD EXIT TUNES PRESENTS Vocaloseasons feat. 初音ミク～Summer～, a themed album centered on summer songs featuring Hatsune Miku.
- The katakana spelling of レイ in the title allows multiple interpretations, spirit (霊), a person's name (レイ as a given name), or even 'ray', all of which resonate with the song's ambiguous narrative about a girl who may be a ghost, a memory, or a manifestation of obsession.
- The lyrics feature recurring summer motifs: cicadas (蝉), a railroad crossing (踏切), and a matching keychain (お揃いのキーホルダー) being torn apart, reinforcing the themes of a summer tragedy and irreversible loss.
- The Master chart (level 12+ / 12.9) was designed by Luxizhel, a notes designer known for technically demanding patterns with heavy slide-note usage.
- The Expert chart was designed by 鳩ホルダー (Hato Holder), whose maimai chart designs often incorporate distinctive patterning choices that test players' reading ability.
FAQ
- Who composed 少女レイ?
- 少女レイ was composed, arranged, and written by Mikito-P (みきとP), a Vocaloid producer known for hits such as ドーナツホール and クノイチでも恋がしたい.
- Who sings 少女レイ?
- The song features Hatsune Miku (初音ミク) as the vocalist, using the standard Vocaloid synthesizer voicebank.
- When was 少女レイ added to maimai?
- 少女レイ was added to maimai でらっくす PRiSM PLUS on August 22, 2025, and is available in Japanese, international, and North American regions.
- What difficulty is the Master chart of 少女レイ in maimai?
- The Master chart is rated level 12+ with a difficulty constant of 12.9, placing it among the higher-tier charts in PRiSM PLUS.
- Who designed the maimai charts for 少女レイ?
- The Expert chart (level 9+) was designed by 鳩ホルダー (Hato Holder), and the Master chart (level 12+) was designed by Luxizhel.
- What is the BPM of 少女レイ?
- The song runs at a steady 150 BPM throughout, with no tempo changes.
- Did 少女レイ appear in other rhythm games before maimai?
- Yes, 少女レイ first appeared in SEGA's CHUNITHM SUN on April 13, 2023, over two years before its maimai debut.
- What is 少女レイ about lyrically?
- The lyrics tell a story of a toxic, possessive friendship that ends in tragedy at a railroad crossing, with the narrator becoming haunted or possessed by a girl. The song's motif was inspired by the drama 人間・失格〜たとえばぼくが死んだら (Human Disqualification: If I Were to Die).
- What album is 少女レイ on?
- The song appears on the 2018 self-titled album 少女レイ by Mikito-P, as well as the compilation CD EXIT TUNES PRESENTS Vocaloseasons feat. 初音ミク～Summer～.
