Ruka Souen

Ruka Souen (早園瑠佳, Sōuen Ruka) is a Night Class student popular among the Day Class boys and one of the most faithful and protective of Kaname Kuran's followers.

Appearance
Ruka, like the rest of the Night Class, posseses the gift of unnatural beauty. Her hair is a pale tan, almost almond in color, with soft waves that reach her waist. Ruka's eyes, however, are a complex shade similar to her hair color. And while they may be similar to her hair color, they can be described as a few shades darker, with tones of light brown.

Personality
Ruka usually reflects a haughty, bored and uninterested person to the rest of the world, probably due to her noble upbringing. One of her defining characteristics is her love for Kaname Kuran. Since they were children, Ruka has been tied by loyalty and admiration for him, angry at all those who disrespect him and disdainful of all girls who fawn on him. Her possessiveness made her hot-tempered and jealous, but her love for Kaname also brought out a vulnerable, self-doubting aspect of her usually proud personality, which she only expressed to her close friend Akatsuki Kain. She realized how overjealous and how she was only thinking of her own feelings and matured. Since giving up on him, she has shown a gentler side to her personality. She even gave Yuki, whom she was jealous of before, etiquette lessons and during the ball, told her that she was glad Yuki and Kaname were getting along so well.

Although Kain has been in love with her since they were children, she appears to be oblivious to his feelings for her. She is elegant, and very ladylike.

Background
Ruka grew up privileged, as the daughter of a noble family. Her family is part of what is referred to by Asato Ichijo as the "Aido faction", which is comprises of the Kain, Aido, Souen, Toya, and other clans. Not much is known about her parentage, but her father or mother is possibly part of the Senate or in another high position, as Ichijo refers to her as "The daughter of Souen". Ruka came to Cross Academy to be closer to her long-time idol, Kaname Kuran, with whom she is in love. On their first night at the school, she asked Kaname to drink her blood to prevent him from drinking Yuki's blood. He has refused it since, which deeply hurts her, even though she had expected him to refuse her blood.

She is roommates with Rima Toya. The Souen family are pro-monarchy like the Aido, Kain, and Toya families.

Plot Summary
She becomes upset with the fact that Kaname chose Yuki to be his lover, but finally accepts Yuki when she discovers Yuki is Kaname's pureblood sister. She even gives Aido shoes to give to Yuki to wear. She seems much more mature and level-headed now, recognizing the foolishness of her obsessive feelings for Kaname, though she still shows just as much dedication to him as before but with a new calmness. When Rido Kuran's servants invaded Cross Academy and attempted to attack the Day Class students and present them as gifts to their Master, Ruka alongside Kain, worked to defend the Day Class girls. Following the breakup of the Night Class, she, Aido, and Kain returned home to see their families for a little while, because they did not know where he had disappeared to and decided that they would search for Kaname and Yuki after their short visit.

Following the one year timeskip, Ruka has been aiding Aido in training Yuki in order to turn her into a lady. Kaname sent Ruka and Kain to monitor the Hanadagi estate for any signs of movement, upon returning to update Kaname, Ruka troubled by their upcoming plan, gives Yuki a cold response, who concerned by the out of character response, asks Kaname if he has done something to Ruka. Ruka later takes care of Kaname after his hand is damaged by wielding the anti-vampire sword.

Kaname Kuran
Ruka has been an admirer of Kaname's since before she even met him and remains one of his most loyal followers.

Akatsuki Kain
Kain is Ruka's cousin and they have been playmates since they were small, however Ruka has never been made aware of Kain's feelings for her.

Powers
In the anime, she possesses the ability of mind control. In the manga, her powers have not been shown yet although offical fanbook stated that she can manipulate the enemy through Illusions.

Name
Her given name is composed of ru meaning lapis lazuli and ka meaning good-looking or beautiful. Her surname is composed of sou meaning early or the obscure meaning of strong fragrance and en meaning garden. The alternative spelling of Ruka's name is Luca, as published by the official Vampire Knight fanbook Japanese release.