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Kouzuki Sein is a member of Princess Rose Club and <a href="http://myanimelist.net/character/24958/Karen_Himeno" rel="nofollow">Himeno Karen</a>'s right-hand man. Being Karen's childhood friend, she had always treated Sein as a younger brother. Although Sein has showed his affections for her, Karen is too shy to accept it and often tries to turn away, though she too has feelings for him.<br /><br />