Director
In Okinawa, Ayaka Kurenai was born in the world’s greatest legendary Karate family. When she was a child, her family was attacked by a mysterious gang that seeks legendary black belt. Her father Soujiro Kurenai was killed and her younger sister was taken in front of her. Time has passed. In Yokohama, she was spending her life as a normal high school girl, hiding her real name and her status as a heir of the legendary Karate family. However, one incident brought her a fateful encounter with her sister who was separated in their childhood. But, her sister was raised as a heartless killing machine by the mysterious gang who took her. .
Writer
Kei é uma colegial que nasceu com uma habilidade extraordinária para o karatê. Apesar de ofuscar todos os garotos na escola de artes marciais, seu mestre - Matsumara - não quer lhe entregar a faixa preta, pois é muito claro que ela só se importa em brigar e não entende os verdadeiros significados da luta. Kei decide então abandonar Matsumara e entra para o grupo rival, passando a usar sua técnica para ganhar dinheiro e fama. Porém, certo dia ela descobre a verdadeira intenção do bando: atacar seu antigo mestre. Ao tentar avisá-lo, Kei é sequestrada e Matsumara deverá salvá-la em uma batalha final contra os inimigos.
