Just like her other friends Umi is a 14 year old student, but of an exclusive private school in her second year. Her school uniform consists of a blue skirt over black tights and a blue jacket with an orange tie. She also has blue boots. Umi gets  magic powers derived from water element and she can use spells as: Water Dragon (Mizu no Riyuu), Ice Blade (Kouri no Yaiba) and Blue Tornado (Aoi Tatsumaki). Her Mashin, named Seresu or Selece, formerly took the form of a blue bat-winged sea dragon.

Her weapon is a thin but powerful rapier, made from Escudo, that would melt into water if touched by anyone but herself. She is a good fencer, to the point that she was chosen as captain of her school's fencing team, and that explains the choice of her sword.

Umi  is the beautiful blue-haired girl whom Hikaru first thought looked like an "idol". She's the tallest of the magic knights and the only daughter of a rich family. Probably for this reason she begins the series with a rather stuck-up attitude and she seems the common pretty but spoiled, selfish and snobbish girl. She actually has quite a short temper, and she is unwilling to live calmly irrational situations...while Hikaru and Fuu seem to accept their unbelievable trip to Cephiro with little question, Umi reacts finding the whole reality on the edge of absurd. By the way, although she initially complains about being stranded away from home and is always ready to rant about the oddities of the foreign world, she becomes very close friends with her fellow knights, and gets as concerned as they are for Cephiro and each other. Umi is also an impulsive girl who often speaks before thinking and panics quickly but her strong loyalty to her friends and determination to succeed make her a fearsome adversary, whose almost unmatched speed and magic attacks are pretty useful in critical battles.
She constantly fights with Mokona because she can't absolutely stand its at-times frustrating behavior and its "puuing". The puffy and fluffy creature is her enemy of life.
However, overlooking her childish behaviors, she is optimistic and does care very much for people she likes: she tries not to show her tender side, but indeed she is a very assertive and compassionate person, strong, determinate, generous with her friends and maybe over protective.  Umi and Fuu look on Hikaru as a little sister, and Umi is the "big sister" who protects them all. Many times this helps her skills to improve beyond her own expectations. Umi is probably the one who undergoes the most noticeable inner change thru the adventure, and in her second trip to Cephiro she's more mature, sweet, experienced and she's more controlled in battle. She likes Clef, but he only appreciates her as a friend, while Ascot secretly has a crush on her. Even if the anime makes it relatively obvious that Ascot has an impossible case because she is in love with Clef. Instead in the manga version she's kinda clueless about love....she show an emotion towards Clef which resembles more respect/devotion than else, and she probably thinks of Ascot like a little brother.

Umi Ryuuzaki ()
Personal Interests:

Age: 14
Birthday: March 3rd (Pisces)
Height: 1,58 m
Blood Type: A
Grade: 8th
Favorite food: Spaghetti
Least favorite food: Anything sweet
Favorite color: Blue
Favorite subject: English
Least favorite subject: Sewing
Extracurricular activity: Fencing Club
Hobby: Baking cakes
Specialties: Fencing, English
Career goal: Bride
Family: Father, Mother
Mashin: Selece
Comic profile:

Umi's not afraid to speak her mind, and as a result she sometimes comes off as selfish. However, she cares deeply about her friends. She uses a rapier for her weapon as it's similar to a fencing foil. Her magical element is Water.

Did you know that...

Umi Ryuuzaki actually means "Sea of the Dragon blossom".
In the Italian version of MKR Umi is called "Marina".
In the Brazilian version she's named "Marine".
Her first appearance is in ep. 1

Voice actress: Konami Yoshida
Voice samples:

Gomen (84 KB)
Umi's presentation (26 KB)
"Watashi wa Ryuuzaki Umi, chugaku ni-nen."
(I am Umi Ryuuzaki, 8th grader.)

Magic Knight Rayearth © CLAMP