Kaai Yuki 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.
(Source: VOCALOID wiki)
Alternative names/personalities:
Aku no Musume: Yukina Freesis (ユキナ=フリージス)
Venomania-kou no Kyouki: Yuki Kaina
Content compiled by AnimeList.moe from publicly available sources.
