Crunchy 8-bit fanfares layered over each other like a Famicom fever dream. Famicom Jump: Hero Retsuden is a 1989 NES crossover RPG celebrating Shonen Jump's 20th anniversary. The arranged versions hit harder than you'd expect, with "英雄列伝" (Hero Retsuden) and "筋斗雲" (Kinto'un) getting full treatments that punch way above NES weight class.
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"勇者の戦い" (Battle of the Brave) captures that classic RPG boss energy, and "ペンギン村" (Penguin Village) is pure Dr. Slump charm in chiptune form. The SE edit versions add a wild sound-effect collage layer. There's a surprising range here, from suspense themes to baseball cues to a final battle against thirteen villains.
All on that Famicom sound chip. Throw this on if you want a crash course in late-80s Jump culture through bleeps and bloops.