Haiyi (海伊) is an upcoming Chinese VOCALOID to be developed and distributed by Beijing Photek S&T Development Co., Ltd. for the VOCALOID4 engine.



On November 13, 2017, the head of Beijing Photek S&T Development Co., Ltd., Ddickky, noted that people seem to think that Xingchen was easy to manage because she was the company’s only VOCALOID. He mentioned that he wanted to try to "have five to take care of" to see how challenging it was to manage more characters and asked fans to "stay tuned". This seemingly hinted that there may be additional characters aside from Xingchen in the future.[1] Later that month, it was mentioned that because Beijing Photek wanted to save money to produce content, some big news would be announced at Quadimension Live Tour rather than at a separate conference. This included new merchandise, new official art, and if there was time, new games or voicebanks. It was not specified if these voicebanks were for Xingchen or for any new characters. Details about the announcement are currently unknown.[2]


On January 5, 2018, a new female character was hinted and introduced as "Xingchen's younger sister".[3]

On February 2, it was reported that the voicebank was finished and that the character design was nearly completed. However, there was not enough time to create new original songs for the character, leading Beijing Photek to decide to make self-covers of Xingchen original songs for an easy comparison between the two.[4] On February 9, Xingchen’s Weibo mentioned that she was the "older sister of Haiyi", confirming the name of the new character.[5]

On February 12, Haiyi’s character design was shown and her illustrator was confirmed to be ATDan.[6] Her first demo, "Liányī", revealed that she had four voicebanks produced: Normal, Dark, Power, and Aroma.


For Haiyi's logo, a shape known as the icosahedron is present next to her name and is part of the last three strokes in the "海" character of her name. In the spiritual meaning of Metatron's Cube, the icosahedron represents water, which may be an influence in her design and name.[7]


Hǎi (海) means "ocean" or "sea". (伊) may translate to "she" or "her".[8]


Haiyi’s design follows an ocean theme. Her color scheme consists of light and dark blues, whites, and pinks. She wears a jellyfish on the left side of her head.


Product InformationEdit



涟漪 (Liányī) (featuring Xingchen; uses Normal, Dark, Power, and Aroma voicebanks) bilibili

Voicebank LibrariesEdit

Product Information
Package details
Haiyi is a young sounding female vocal. For her VOCALOID4 package, she has four voicebanks designed for XSY: Normal, Dark, Power, and Aroma.
Cross-Synthesis notes:

In total the package offers the equivalent of 12 additional voicebanks achievable via XSY. The total tone variation offered by the package comes to a theoretical 16 voicebanks in total.

Individual VocalsEdit

Product Information
Voicebank sample

Haiyi V4 Normal

Product Information
Voicebank sample

Haiyi V4 Dark

Product Information
Voicebank sample

Haiyi V4 Power

Product Information
Voicebank sample

Haiyi V4 Aroma

Additional InformationEdit


Sandbox/Haiyi's character status

Chinese fans expressed a like for Haiyi and considered her voice to be unique among other Chinese virtual singers.


Quadimension haiyi
The image gallery for Haiyi may be viewed here.


External linksEdit

Chinese 海伊_Official Official Weibo Link
English deviantArt , art and media community Link
Japanese Pixiv , art and media community Link
English MikuMikuDance wiki for models Link