Ryōko Asuka

is a blonde member of Red Tail. She always wears a medical mask and rarely talks.

Appearance
Ryoko has long, blonde hair styled in a similar fashion to Shizuka Nanami's, though it is more messier and her bangs fall over her right eye, and is always seen wearing a medical mask. She is sometimes seen wearing her school's uniform.

Personality
She has a delinquent-like personality and doesn't hesitate to make daring comments about others. She is usually seen with Yuka Hanazawa.

Touhoushinki Arc
Her first appearance was during Tatsumi Oga's, Hajime Kanzaki's and Tatsuya Himekawa's assault on Ishiyama to confront Tojou. However, they were blocked by delinquents who were apparently promised to that if they took down the trio they would united under Tojou. Aoi Kunieda intervenes with the Red Tails at her side.

Prince En Arc
Seen as a supporting character when Yuka Hanazawa asks her to cover for the missing Ishiyama students.

Relationships
As a member of the Red Tails, she always supports them.

Yuka Hanazawa
She and Hanazawa appear to be close friends and are often seen together. It it revealed both of them are skilled at hair care when they offer Tatsuya Himekawa to bring his trademark pompadour down. Yuka also asks her to cover for the missing Ishiyama students while they go searching for Prince En.

Quotes
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Trivia

 * Asuka has only taken her mask off twice. Once when she was eating lunch with Yuka Hanazawa at St. Ishiyama High and the second time in her flashback when Hanazawa contacted her and asked her to cover for her and the Ishiyama gang.
 * Comparing her appearances in the anime and manga, Asuka has more appearances in the anime.