The world literally unravels for a group of Tokyo teens as they attempt to discover the truth surrounding the death of one of their friends. Everything turns inside out once Yahagi Shougo gets his hands on a top secret power bike and is hunted by the authorities. When Shougo turns to his friends for help, they discover a complex web of dark, political intrigue and shocking government cover-ups.

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Sequel: Megazone 23 Part II: Himitsu Kudasai
Same setting: Megazone 23 XI
Same setting: Megazone 23 Sin