Umi Ryuuzaki

Umi Ryuuzaki (龍咲 海 Ryūzaki Umi) is the Magic Knight of Water. Despite being a beautiful and elegant girl, with a tall model-like figure and long, flowing blue hair, she actually has a short temper, and was initially shown to be the most skeptical of the three. Later on, however, between the three Magic Knights, she took on the mantle of the Big Sister and proved to be very protective of her two best friends, Fuu Hououji and Hikaru Shidou.
She is voiced by Yoshida Konami in the Japanese Dub and Wendee Lee in the English Dub.