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SF-A2 miki

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"Miki" redirects here. For other uses, see Miki (disambiguation).
SF-A2 miki
Biographical information



Miki Furukawa


Yusuke Kozaki (Original\2009)

Product information

AH-Software Co. Ltd.


AH-Software Co. Ltd.




YAMAHA Corporation


SF-A2 codename miki (SF-A2 開発コード miki), is a Japanese VOCALOID developed and distributed by AH-Software Co. Ltd., and was initially released in December 2009 for the VOCALOID2 engine. There is currently ongoing development towards an upgrade to the VOCALOID4 engine.[1] Her voice is provided by the Japanese female singer, Miki Furukawa (フルカワミキ / 古川 美季; Furukawa Miki).



Often shortened to just "SF-A2 miki", her codename of "miki" comes from her provider's name "Miki Furukawa". In Japanese, 'codename' or 'development code' translates as 'kaihatsu koudo'. The meaning of the "SF-A2" part of her name has never been stated.


Her design was unique among the VOCALOIDs. She had no references to YAMAHA based musical instruments like other VOCALOIDs and was designed to look cybernetic.[2]

According to information that came from the 2012 redesign, miki was designed to look like she was made out of a inorganic material and was conceptualized as an android. Her body is designed to look like that of a child, but also give her the overall appearance of a young teenage female. Though she is an android, she is covered in muscles made from various materials such as carbon nanotubes, but were made loose to give a mild deformed look about them. Having an immature-looking body allowed her to appear younger then she looks, similar to how Miku and Rin could do the same.[3]

VOCALOID ReleasesEdit

Examples of UsageEdit

! The Examples of Usage sections are going through a revamping process, see Thread:125093 !
Music featuring SF-A2 miki
This VOCALOID is featured in 24 songs and on 38 albums on this wiki.
There are listings for notableoriginal and cover songs.
External search →

Romaji — SF-A2_miki | Favicon-nico Favicon-youtube Favicon-bilibili
Alias — miki | Favicon-nico Favicon-youtube Favicon-bilibili
Written — SF-A2_開発コード_miki | Favicon-nico Favicon-youtube Favicon-bilibili

To our readers and editors: For section notes, please read this tutorial. And before adding translated videos, please read this tutorial.

(The "Examples of Usage" section is currently being revamped; we are sorry for any inconvenience this may cause in the meantime.)

SF-A2 miki!
Featuring SF-A2 miki
Category song
SF-A2 miki!
Featuring SF-A2 miki
Category song
SF-A2 miki!
Featuring SF-A2 miki
Category song
SF-A2 miki!
Featuring SF-A2 miki
Category song



SF-A2 miki Garage Kit

She, along with Kaai Yuki and Hiyama Kiyoteru, were introduced to expand the VOCALOID market and give producers more choices.[4]

An album with her singing Christmas songs, "VOCALOIDS☆X‘MAS", was also set to be released in November 2009. Notable VOCALOID song creators' works are included.[5][6] She was also used for the introduction to the Hello Kitty game, Hello Kitty to Issho! Block Crash 123! on its official page.

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

In June 2012, merchandise for both her and Yuzuki Yukari were put up for sale, including mugs and T-shirts.[7]

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.[8]


Although no official figurines exist, a Garage Kit was produced for her by Ishii Komasuke.

Additional informationEdit


SF-A2 miki Popularity
To our readers and editors: For section notes, please read Wiki notes:Popularity sections.

SF-A2 miki was the most popular of the first three AH-Software VOCALOIDs. However, all three were slow to gain popularity and were among the least popular of the Japanese VOCALOIDs for a while.[9] When interviewed, Tomohide Ogata mentioned he had a feeling SF-A2 miki was very popular overseas.[10]


An independent search on Nico Nico Douga revealed that most VOCALOIDs had less then 1,000 videos uploaded on Nico Nico Douga in 2011 between July 1st and December 15th. SF-A2 miki fell into this category.[11]


  • Kio's model is available for purchase from Windows 100% magazine and the MMD Starter Pack magazine. Previously, the model was available to download from his site. However, it was pulled after users violated the model's terms of use.
  • SF-A2 miki's voice provider, Miki Furukawa, works for Ki/oon records, which is owned by Sony: the same group Utatane Piko's provider, Piko, comes from.

Notable for...Edit

  • One of the first 3 AH-Software VOCALOID2 voicebanks to be released
  • One of the two first female AH-Software VOCALOIDs
  • First VOCALOID of the Artist Edition series to be released



  1. [1]
  2. link
  3. link
  4. VOCALOID Enjoy
  6. - Xmas CD
  7. link
  8. AR Vocaloid Walk
  9. VCC - How big is the Japanese Vocaloid community?
  10. link
  11. link

External linksEdit

Japanese AH-Software official homepage Link
Japanese VOCALOID2 SF-A2 miki product page Link
Japanese AHSoftware The official YouTube channel Link
English deviantArt , art and media community Link
Japanese Pixiv , art and media community Link
Japanese Piapro , art and media community Link
English MikuMikuDance wiki for models Link
English Fanloid wiki for derivatives Link


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