Legend tells that when the Earth was destroyed, the great clockmaker Y made a replacement from cogs and gears. Naoto Miura is a young boy who aspires to be a great clockmaker. However, despite his unique talent—sensitive hearing that can immediately understand clockwork mechanics from noise alone—he has made little progress. But this changes when a coffin falls from the sky into his apartment, revealing RyuZU, a female automaton forged by Y himself. News of RyuZU's arrival brings Marie Bell Breguet, the gifted heir of a distinguished line of clockmakers, and her cyborg bodyguard Vainney Halter into Naoto's life as well. When she and Naoto both become embroiled in an action-packed battle for their lives, they discover an uncomfortable truth: the clockwork planet that humanity has lived on for over a millennium is beginning to break down—a secret that many people will kill to protect. [Written by MAL Rewrite]

This Cobra adaptation features short arcs of Cobra saving the world, his friends or himself.

When Utopia More discovers an ancient record that holds the key to unlocking the secrets of the universe, she becomes the target of the ruthless Gypsy Doc of the Pirate Guild. Utopia finds herself saved by the easy-going yet legendary space pirate, Cobra, whose custom made Psychogun makes him a force to be reckoned with. Together, the two of them attempt to stop Gypsy Doc (along with Cobra's revived arch-nemesis, Crystal Boy) and his efforts to steal the record and use its secrets to rule the universe.

Lady has disappeared so Cobra must dive into her past to save her. This is the story of who Lady used to be and how she got that metal body.