The characters of her surname, "Kaai" (歌愛), mean "song" and "love" respectively. Her given name, "Yuki" (ユキ), comes from the kanji form (雪), meaning "snow". Together, her name means "love song of snow".Yuki is a 9-year-old elementary school student. She is said to be "as tall as 10 big apples" and "as heavy as 86 apples".