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Kaai Yuki

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Kaai Yuki
Biographical information
Gender Female
Age 9
Height "As tall as 10 big apples"
Weight "As heavy as 86 apples"
Product information
Company AH-Software Co. Ltd.
Initial release
Stable release
Operating system
Distributor AH-Software Co. Ltd.
Voice provider Unrevealed[1]
Illustrator Umetani Atarö (Original\2009)
Reduced no. SAHS-40714
Affiliation YAMAHA

Kaai Yuki (歌愛ユキ) is a Japanese VOCALOID developed and distributed by AH-Software Co. Ltd., and was released in December 2009 for the VOCALOID2 engine. Yuki's vocals are based on an elementary school student. With her voice provider being a young girl the identity of her provider has never been revealed for legal reasons. She is the first female VOCALOID whose voice samples are not produced from an adult.


She and Hiyama Kiyoteru were released as "student" and "teacher" VOCALOIDs.


The characters of her name, "歌愛", mean "song" and "love" respectively.


Yuki is meant to be portrayed as a 9 year old elementary school student. She is said to be "As tall as 10 big apples" and "As heavy as 86 apples". Her red randoseru is a motif of Yamaha's wind controller, WX5.


VOCALOID ReleasesEdit

Examples of UsageEdit

Translation-mark To our readers and editors, for section notes please read; this page.
Before adding translated or subbed videos, please read this tutorial in order not to list gravely mistranslated ones.

Author(s) Peperon-P Romaji/English Kairaishi-tachi no yoru (Night Of The Puppet Masters)
Category Original song Featuring Kaai Yuki
Niconico YouTube
Paradise Song
Paradise Song
Author(s) Yuni-P
Category Original song Featuring Kaai Yuki
Author(s) Kagome-P Romaji/English Disuko☆Shokoratekku (Disco☆Chocolatheque)
Category Original song Featuring Kaai Yuki
Niconico YouTube
Author(s) kk2 (music), 107 (guitar), kamin (illust), piro (video) Romaji/English Burūtawā (Blue Tower)
Category Original song Featuring Kaai Yuki
Niconico YouTube

  Music featuring Kaai Yuki
Simple Music.svg
Featured in ( 17 ) songs and on ( 21 ) albums. 
Listings for Featured songs and Originals / Covers
External search - Romaji: NicoNico  YouTube  BiliBili | Kanji: NicoNico  YouTube  BiliBili


Yuki, along with SF-A2 miki and Hiyama Kiyoteru, was introduced to expand the VOCALOID market and give producers more vocal options to utilize.[2]

Until May 2011, all AH-Software Vocaloids were banned from KARENT.

iOS App

They also appears in the app "AR Vocaloid Walk", a Augmented Reality app. Several other Vocaloids, UTAU and Derivative characters also appear in the app.[3]

Additional informationEdit


Kaai Yuki Popularity
The three AH-Software Vocaloids were slow to gain popularity and for a while, were amongst the least popular VOCALOIDs. In 2010, Kaai Yuki was the second most popular of the trio.[4]
An independent search on Nico Nico Douga revealed that most VOCALOIDs, Yuki included, had less than 1,000 videos uploaded to Nico Nico Douga in 2011 between July 1st and December 15th.[5]


  • Yuki and Kiyoteru were announced in November 2009. Interestingly, at the end of the previous month Crypton Future Media had just made their own announcement of a series called Project if…, which was set in an elementary school setting.[6]

Notable for...Edit

  • One of the first 3 AH-Software VOCALOIDs
  • One of the two first female AH-Software VOCALOIDs
  • First vocal to be provided by a child
  • First female vocal to be provided by a child



  1. [1] Vocaloid Answer Wiki - Why are some voice providers not revealed?
  2. VOCALOID Enjoy
  3. AR Vocaloid Walk
  4. [2] VCC - How big is the Japanese Vocaloid community?
  5. link
  6. link

External linksEdit

Official :

Fandom :


Start a Discussion Discussions about Kaai Yuki

  • Show me more lovely Kaai Yuki!!!

    3 messages
    • You could always try the category pages "Songs featuring Kaai Yuki", or the original/cover song lists. Songs I know/listen to: I Am Living...
    • Hi IAliceVoice, Thank you for telling me those great works! I'll check all out from now on! love!
  • Is Kaai Yuki the girl in Dead Woods Circus?

    5 messages
    • Ok, I was wondering I mean Dark Woods, accidentally wrote dead. I must have misread Yuki's page because I thought it said she was released...
    • I've always thought that the rotting girl was meiko but the young girl sakine meiko. I've always seen that as more logical since she ...

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