COKO

* CeVIO AI
* VOICEPEAK

**COKO** (狐(こ)子(こ)) is a vocal synthesizer character derived from the Japanese Virtual Singer, KOKO. She was released as a Japanese singing voicebank for *CeVIO AI*, developed by KAMITSUBAKI STUDIO as a part of the *ARTIFICIAL SINGING SYNTHESIZER* series in January 2023.

On October 18, 2023, during the "KAMITSUBAKI STUDIO 4th Anniversary Special Live Broadcast, it was announced that COKO would be released as a text-to-speech library for *VOICEPEAK* and was expected to release in January 25, 2024.

COKO's voice is provided by the Virtual Singer, KOKO.

## Concept

COKO is advertised as a "ARTIFICIAL SINGING SYNTHESIZER" (音楽的同位体) of her voice provider KOKO, similar to that of KAFU, SEKAI, RIME & HARU. In her reveal video, the concept phrase is "もっと自由に、もっと無邪気に。此処で「音楽」を鳴らそう。" (To be more free, to be more innocent. Here, let's play with "music".) The word for "here" (此処; *koko*) is used as a play on words of COKO's name. Her signature color is cyan, specifically hex code #00CDEB.

### Etymology

COKO's name is a stylized version of her voice provider, KOKO's, name. Additionally, although the romanization is not the same, the pronunciation of the name "COKO" is shared with her voice provider and Rinne Koko (輪廻此処) from KAMITSUBAKI CITY UNDER CONSTRUCTION. (神椿市建設中。) - KOKO's character.

The kanji of her name, "狐子" translates to "kitsune girl". A kitsune in Japanese folklore is a mystical fox creature who are typically feminine, which is reflected in COKO's design.

### Appearance

COKO's appearance and theme are based on her voice provider, KOKO, with many similar design elements and an overall white color-scheme. COKO has short, choppy whitish-gray hair with an electric blue interior. Large faux foxlike ears sit atop her head. Her eyes are frost blue and lavender purple. Her real ears have teal triangular earrings with a lightning bolt-like design in the center while her left fox ear has a teal triangular earring. A black choker with a silver circle surrounding a lightning bolt center charm adorns her neck. She wears a black bodysuit underneath a white strapless crop top with a silver waistband and white shorts with black bands. Her top is adorned with a blue and purple strip of fabric bearing a white futuristic pattern on it. Over that, she wears a short white jacket with baggy sleeves and a blue interior. The shoulders of her jacket are black and covered by large intricate silver shoulder plates, tied around her arms by black belts with silver buckles. Her jacket is decorated with a teal zipper.

On COKO's left hand is a short white glove with a purple triangle on the back. The palm of her glove is purple. A plain silver ring decorates her left hand's middle finger. Her boots sit mid-thigh with a tapering strip running up underneath her shorts. A black strap keeps the top of her boots firmly in place. The knee and popliteal of her right shoe exposes her bare leg, cut in a triangular shape while the left knee and popliteal is covered by a black sheer fabric. Her boots are black with angular metal knee pads with black metal ridges, silver tongues with a purple decoration that resembles an hourglass, and silver and blue soles. A blue metal 'V' sits atop the rim of her boots. A gray harness is wrapped around her body. On each hip, attached to her harness, is a black holster shaped piece of armor with silver stripes. Her faux, prism-colored, nine-tailed fox tail made out of nine blue crystalline shards of light is attached to her coccyx.

COKO was illustrated by Japanese freelance illustrator SWAV.

### Relations

* KOKO - Voice Provider and basis for COKO's character.
* KAFU - Fellow "ARTIFICIAL SINGING SYNTHESIZER" series vocal.
* SEKAI - Fellow "ARTIFICIAL SINGING SYNTHESIZER" series vocal.
* RIME - Fellow "ARTIFICIAL SINGING SYNTHESIZER" series vocal.
* HARU - Fellow "ARTIFICIAL SINGING SYNTHESIZER" series vocal.

## History

### Marketing

Two demonstrations of her vocal were shown during the *幸祜 -koko-　STREAMING COVER LIVE* broadcast event: *the last bullet* and *Dimension* featuring her singing alongside KOKO. The full version of *the last bullet* will premiere on October 10, 2022 at 6:00 PM JST.

On November 6, COKO performed alongside her voice provider during the *Harusaruhi × KOKO TWO-MAN LIVE Singularity Live vol.2* virtual concert.

On December 11th, 2023, demonstrations for all four of COKO's VOICEPEAK emotional parameters were released on the Musical Isotope Phenomenon YouTube page, these include: Happy, Sad, Fun and Angry.

## Voicebanks

COKO

* Musical Isotope COKO (*CeVIO AI*), January 25, 2023
* Musical Isotope COKO TALK EXTENSION (*VOICEPEAK*), In development, expected for January 25, 2024.

## References

1. ↑ https://twitter.com/musicalisotope/status/1714644408765645158
2. ↑ https://coko.kamitsubaki.jp/ Color from logo seen throughout the official website.
3. ↑ https://youtu.be/73h0qn7eXDw?t=4704
4. ↑ https://twitter.com/CeVIO\_News/status/1589221828270391297

## External links

### Official

* Official Website
* COKO FINDME STORE Website
* Musical Isotope YouTube Channel
* Musical Isotope Twitter

### Articles

* CeVIO Wiki
* NicoNicoPedia
* Moegirlpedia
* VocaDB (CeVIO AI)
* VocaDB (VOICEPEAK)