Nanami Kiryuu

Nanami Kiryuu (桐生 七実 Kiryū Nanami) is Touga Kiryuu's dramatic little sister who is often used as comic relief throughout the series. Her love for her older brother borders on obsession, and she is often seen using devious measures to punish people who would take her brother's attention away from her. Though her motivations are considered the simplest and least ambitious out of all the Duelists, they are no less real to her, and she suffers just as much as all the other Student Council members.