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Kuroki Risa (黒木 理沙) is a student of Seventh High School.
Appearance and Personality
In anime, she is shown to have brown hair reaching almost up to her shoulders. 
In AD 2094, she finished 2nd behind Watanabe Mari in the Battle Board event.
In AD 2095 she competed in the Women's Official Division Battle Board event. She was one of Mari's and Hidaka Makiko's opponents. She accidentally collided with Mari during the match, after having over-accelerated because she was sabotaged, injuring both.