Hisui Diamond

Hisui Diamond (ヒスイ・ダイヤモンド, Hisui Daiyamondo), or Princess Hisui (ヒスイ姫, Hisui-hime), is the main protagonist heroine of Ice Jeweler.

History
A Jeweler from Kobutsu, a planet in the Koseki system, she is the daughter of King Saphiro and Queen Rubia, younger sister of Prince Toparz, and older sister of Second Princess Ameji. Like the Icejins of the Dragon Ball universe, they have the same bodily features, even the tails, but are a bit more human- or Saiyan-like, give or take.

Anyways, getting back to Hisui, she is twelve years old, entering a stage of puberty. On the day of her birth, a young girl from planet Earth named C.C. came to Kobutsu and gifted her with a mysterious ability called "Geass". Saphiro and Rubia were so afraid that she would lose control over it, so they made her forget about ever having it, forbidding her from using it.