Sonoda Keiko
Keiko is one of Nanami's followers, along with Aiko and Yuuko. They all look upon Nanami as the person to befriend, for several reasons. But Keiko has feelings for Touga, and Nanami isn't about to allow that. She casts Keiko aside, and her hurt and anger is so great that she finds her way to being a Black Rose Duelist.If there's anyone who can be considered invisible, it's Keiko. She's an average student at a large school, and is rarely seen without her two similarly named friends. The three of them decide to befriend Nanami, possibly in an attmept to make themsleves be noticed more. They are further inpressed when they find out that Nanami is Touga's brother. Aiko and Yuuko are perfectly content to serve Nanami, but Keiko's feelings for Touga get in the way of this. After being forced away by Nanami, Keiko doesn't understand why she can't be allowed to even be close to Touga. Even though she knows her and Touga together is just a fantasy, it doesn't change her strong feelings.
Quick statistics:
Birthdate: October 6 - Astrological sign: Libra - Grade: 7 - Blood type: A
Episodes of appearance:
#3 - Butoukai no Yoru ni (On the Night of the Ball)
#4 - Hikari Sasu Niwa - Prelude (The Sunny Garden - Prelude)
#6 - Nanami-sama, Goyoujin! (Nanami-sama, Beware!)
#8 - Curry-naru High Trip (The Great Curry High Trip)
#10 - Nanami no Taisetsu na Mono (Nanami's Precious One)
#16 - Shiawase no Cowbell (Cowbell of Happiness)
#21 - Warui Mushi (Troublesome Insects) - Keiko's duel episode
#24 - Nanami-sama Himitsu Nikki (Secret Nanami-sama Diary)
#27 - Nanami no Tamago (Nanami's Egg)
#31 - Kanojo no Higeki (Her Tragedy)
#32 - Odoru Kanojotachi no Koi (Romance of Dancing Girls)
#39 - Itsuka Issho ni Kagayaite (Someday Shine With Me)