In the action series Nine Peaks, Gaku Mashio is mysteriously transported twenty-two years into the past following his father’s death. Living under an alias, he joins forces with his teenage father to conquer the rough streets of Kurei.

Stranded in the year 2000, Gaku adopts the name Gaku Miyagi and enrolls at Seiha High School, a notorious hub for brawlers. He unexpectedly finds a mentor and ally in Harumi, the headstrong young man destined to become his father.

Together, this unlikely duo navigates the dangerous power struggles of Kurei’s underworld. As Gaku fights to change his family's future, he must prove his strength against the town's most formidable gangs in this high-stakes delinquent action series.

High schooler Gaku Mashio travels 22 years into the past to join forces with his teenage father in the Nine Peaks manga.

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