Sixteen-year-old Gaku Mashio lives by his fists. In the coastal city of Kumine, his quick temper constantly provokes clashes with older high school delinquents, earning him disciplinary suspensions and steady lectures from his father, Harumi. Gaku views Harumi as an uninspired, passive diner owner who understands nothing about street pride. That perception shatters when Harumi dies abruptly in a road accident. At the wake, an unexpected sea of former gangsters and hardened figures arrives to mourn Harumi as the legendary peacemaker who single-handedly conquered and unified Kumine during his youth.

Seeking closure, Gaku heads to the docks to fish alone, engaging in the one pastime he once shared with his father. A freak pull on the line drags him into the ocean depths. When he surfaces, he is hauled to safety by an athletic teenager wearing an old-school school uniform—Harumi Mashio himself, sixteen years old, alive in the year 2000. Transported twenty-two years backward, Gaku enters a brutal era where rival school factions fight for supreme dominance over Kumine. Concealing his identity, Gaku forms an alliance with his teenage father to battle rival crews and uncover the true origin of Harumi's legendary reputation.

What to Expect

Nine Peaks blends classic yanki delinquency with time-slip suspense, building high-impact physical brawls rooted in concrete weight and tactical momentum. Created by Tetsuhiro Hirakawa, known for his long-running gang manga Clover, the series features crisp anatomy, raw hand-to-hand fight choreography, and aggressive panel layouts. The narrative maintains grounded stakes where gang territory disputes, school hierarchies, and personal honor dictate each encounter. Beyond the brawling, the central engine remains the shifting dynamic between Gaku and Harumi as two peers testing each other's resolve across different eras.

Who Will Enjoy This

This series suits fans of retro furyo action, high school turf warfare, and time-travel stakes. Readers tracking delinquent sagas will find immediate parallels with Tokyo Revengers due to its multi-decade time leap mechanism and high-stakes gang conflicts. Similarly, those drawn to noble delinquent codes, defensive camaraderie, and school-wide brawling will appreciate the thematic kinship found in WIND BREAKER.