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Morio Tatsuo got hooked on martial arts through his admiration for Bruce Lee. But when he meets a certain girl, he's no longer satisfied with just watching, and wants to be a fighter himself.
Tobi Shima Sen lost his father and lives with his mother. He is a scrapper but his mother has no authority over him. In order to educate him, she decides to send him to a kickboxing coach during the holidays/vacation.