Overview
うぇいびー (Wavy) is a high-energy pop-rock track by Akina Saegusa (三枝明那), a VTuber affiliated with the NIJISANJI (にじさんじ) project. The song was composed, arranged, and written by Yuuri Kuriyama (栗山夕璃) and first appeared on Saegusa's debut mini-album UniVerse, released in 2024. Its music video was produced by INPINE and 田中寛崇. Lyrically, the song blends Japanese, Chinese (the phrase "我喜歡你" appears repeatedly), and English, capturing a playful, self-aware take on romantic confession over a driving 200 BPM beat.
In maimai, うぇいびー joined the DX catalog as part of the PRiSM PLUS update on June 20, 2025, under the POPS & ANIME genre. The song's Re:Master chart holds a notable distinction: it was co-designed by Akina Saegusa herself alongside the charter Happy (はっぴー), making it a rare instance of a VTuber artist personally contributing to their own rhythm-game chart. The Expert and Master charts were designed by サファ太 (Safata) and Luxizhel, respectively. The song also ties into a set of in-game collection titles that reference NIJISANJI inside jokes and related songs, rewarding players who complete specific credit-based play combinations.
Videos
Charts
DX
BASIC
3(3)
214 notesDesigner: -|Tap 186Hold 9Slide 5Touch 6Break 8
ADVANCED
7+(7.6)
400 notesDesigner: -|Tap 355Hold 10Slide 16Touch 13Break 6
EXPERT
10(10)
545 notesDesigner: サファ太|Tap 370Hold 72Slide 37Touch 29Break 37
MASTER
13(13)
839 notesDesigner: Luxizhel|Tap 580Hold 44Slide 133Touch 35Break 47
Re:MASTER
13+(13.7)
935 notesDesigner: 三枝明那とはっぴー|Tap 629Hold 48Slide 176Touch 23Break 59
Trivia
- うぇいびー is Akina Saegusa's first song to appear in the maimai series, drawn from her debut mini-album UniVerse (2024).
- The Re:Master chart is a collaborative design between Akina Saegusa and the charter Happy (はっぴー), one of the few instances in maimai where the vocal artist directly participated in creating their own chart.
- The Japanese wiki notes that the Re:Master chart has some sections with imprecise guidance, which it attributes to the chart being a collaboration with someone who does not regularly produce beatmaps.
- The Re:Master chart's rotation begins from the left hand; players may find mirror settings helpful for certain patterns.
- A version of うぇいびー featuring vocals by KAFU (a CeVIO AI voicebank) has also been released, expanding the song beyond the original performance.
- The in-game collection set includes titles referencing NIJISANJI culture: '三枝村' (Saegusa Village), '普通に…ファンなので…' (Just… a fan…), and 'にじさんじのmaimai でらっくす番長' (NIJISANJI's maimai DX Boss). These are earned by playing specific song combinations in a single credit.
- The song's lyrics weave together Japanese, Mandarin Chinese (e.g., '我喜歡你', 'I like you'), and English phrases like 'I WANT YOU' and 'I NEED YOU,' reflecting a multilingual, internet-culture sensibility.
- うぇいびー was added to the Asian version of maimai DX on October 30, 2025, several months after its Japanese release.
FAQ
- Who composed Wavy (うぇいびー)?
- うぇいびー was composed, arranged, and written by Yuuri Kuriyama (栗山夕璃). The vocals are performed by Akina Saegusa (三枝明那).
- What album is うぇいびー from?
- The song appears on Akina Saegusa's first mini-album UniVerse, released in 2024.
- When was うぇいびー added to maimai?
- The song was added to maimai DX PRiSM PLUS on June 20, 2025 in Japan and international regions, and on October 30, 2025 in the Asian version.
- Who designed the charts for うぇいびー in maimai?
- The Expert chart was designed by サファ太 (Safata), the Master chart by Luxizhel, and the Re:Master chart was co-designed by Akina Saegusa herself together with Happy (はっぴー).
- What is the meaning behind the title うぇいびー?
- The title うぇいびー is a Japanese phonetic rendering of the English word 'Wavy,' using the uncommon small-ぇ kana to produce the 'we' sound.
- Does うぇいびー have a KAFU version?
- Yes, a version of うぇいびー with vocals by KAFU, a CeVIO AI voicebank, has also been released.
