Aoi Kunieda

is a junior from Ishiyama high and was the third leader of Red Tail as well as a former Tōhōshinki member.

Appearance
Aoi is a petite, cute faced woman with long black hair and blue eyes. Early in the series she would commonly wear a white trench-coat with cargo pants but recently has taken up wearing an average school girl uniform. In her Aoi Kunie disguise she wears a simple dress, a bucket hat and a pair of glasses and changes her hair style.

Personality
Kunieda is first portayed as a strong and determined young woman who would not hesitate to beat down those who opposed her. She retained a serious attitude throughout her earlier appearances. However, after her "defeat" at the hands of Oga her attitude has relaxed considerably, revealing a somewhat kind personality. However, she still retains her delinquent characteristics in serious situations or when pertaining to her rivalry with Hilda. She has a crush on Oga which makes her act shy whenever he is around, she also tries her best to hide her alter ego from Oga because she thinks he'll hate her.

Ishiyama High
Kunieda appears for the first time in the park with her little brother. She meets Oga there for the first time, and she has a crush on him. She is one of the Tohoshinki, and she is stronger than Kanzaki and Himekawa. After hearing what happened in Ishiyama High, she went there to find Oga and punish him for the sake of Ishiyama's girls.

Abilities
She uses a wooden sword in combat that she is really adept with. She uses the Shingetsu Style taught by her grandfather which also gives her the ability to break rocks barehanded.

Shingetsu style: 
 * Nadeshiko - A stone breaking technique
 * Battou-Jutsu - Sword drawing techniqueVlcsnap-2011-04-21-18h16m09s13.png
 * Ichishiki Hagan Kiku Ichimonji - First ceremony sword drawing technique
 * Nishiki Hyakka Midare Zakura - Second ceremony sword drawing technique
 * Sanshiki - Technique she attemted to use against Hilda

Hildegard
Aoi has seen Hilda as a rival ever since the fight between the two of them. Aoi is seen being jealous of Hilda for being Oga's "wife", when it is just a misunderstanding of hers just like every other students in the Ishiyama Highschool. They started to get along with each other after the St. Ishiyama Arc.

Oga Tatsumi
Aoi Kunieda has a crush on Oga ever since she had met him in the park, when Aoi was in her disguise. She is seen showing her shyness around Oga or blushing whenever she is talking to him. Oga though seems to be more friendlier towards Aoi who is in her disguise, he even invites her to go get some ice cream in one chapter.

Trivia

 * A recuring joke is that Aoi misinterprets most things Oga says as something romantic, when that isn't actually the case: "Will you go out with me?" (manga)/ "Will you do it with me?" (anime)- Oga referring to a "park debut", and probably the most easily misunderstood-; "Ah... oy" she thinks he is reffering her by given name (Aoi) (in Japanese culture, typically only people who are close are allowed to refer to an individual in such a manner); his asking her if she wants to be Be'el's mother (when he actually means just getting rid of Be'el and giving him to her); and in an instance when he gives her Be'el and tells her not to go farther then 15m (so that he won't get electrocuted) she mistakes it as "don't leave my side".
 * It seems Oga cannot tell Aoi is the same girl he met the park- either because he is too dense or he cannot distinguish the similarities of her disguise of "Kunie" and her school look.
 * In chapter 39, Oga is friendlier towards Aoi in disguise, he also invites her to get some ice cream, causing Aoi thinks she's on a date with Oga.